Transmission oil for boat motors HDX. Transmission oils for a boat motor gearbox

Boat, like any type of motors, is subjected to wear. This is explained by the fact that its design provides a number of mobile elements. One of the main components of this kind is the gearbox. In order to increase its operation, a special transmission fluid is applied.

Such lubricants have a certain expiration date, after which the oil change will be required in the gearbox. boat motor. This procedure is relatively simple, so the engine owner can perform it. However, during the replacement, it is necessary to take into account a number of nuances, among which the question of which oil is suitable for the gearbox of the boat engine.

Gearbox and a number of other elements, including screw, power aggregate When the latter is working under water. This liquid, in turn, plays the main role in the functioning of the cooling system. That is, when the boat moves along the water, water circulating on this system prevents the overheating of the motor.

Despite the fact that the engine and its individual components are protected from the negative effect of fluid by various glands and gaskets, with time, individual drops penetrate inside the power unit. As a result, it leads to the formation of corrosion on the details, the salt contained in seawater creates a negative environment for the work of components that regularly exposed to friction.

All this indicates that special oils need to pour into the gearbox. As part of such lubricants, there are additives that level the negative effect of water. They bind and prevent the contact of the details with it. Such additives are more known as anti-immulsion.

It is important to understand that lubricants Do not protect the motor in case of a large amount of water in it. In addition, it is impossible to pour oil into a gearbox intended for automotive engines.

This is explained by the fact that such types of lubricants do not contain anti-immulsional and anti-corrosion additives. In other words, using a similar material for boat engines, the necessary effect is not achieved, and the components of the power unit will quickly fail. Therefore, it is not recommended to apply them, even though they cost cheaper.

Replacing the oil in a boat motor gearbox should be made on lubricant with a degree of viscosity:

• 80w90;
• 85W90.

In relation to materials intended for the types of engine types, the API standard applies. According to its requirements lubricants must match the following classes:

1. GL-4. This type of lubricant is intended for cone and hypoid gears operating under variable load conditions. Often, as part of this product, there are up to half of the additives used in the second-class oil.
2. GL-5. Designed for operation in severe conditions at high loads.

This class includes products consisting of more varied additives. Requirements for GL-5 Lubrication:

• has the best anti-promotional characteristics;
• provides high level Protection of engine components from mechanical damage caused by blows, high loads and pressure.

GL-5 class oils can replace the GL-4 materials.

Selection depending on the type of engine

Replacing the oil in the boat engine is made, according to the requirements that make the manufacturer of power units to their product. Therefore, the choice of lubricant is determined by the type of engine used in the swimming age.

Yamaha

For motors of this brand, the use of Yamalube Gear Oil SAE 90 GL-4 is recommended. This product passed numerous tests on Yamaha engines and approved by the manufacturer. The oil includes a certain set of additives, which:

• protects from the wear of the part at high loads;
• prevents the emergence of corrosion and rust;
• prevents oxidative processes;
• eliminates the appearance of deposits and foaming.

This lubricant extends the service life of power units.

Tohatsu.

Tohatsu makes the use of lubricants different marks. The main thing is that this product corresponds to the GL-5 class and had a viscosity of 80W90.

Mercury.

It is important to note that the products of the Quicksilver brand are complemented by different attitudes. Therefore, they cannot be mixed with each other.

The volume of fuel oil depends directly on the power of the engine used and constructive features gearbox. That is, the higher the first indicator, the more the lubricant is required.

At the same time, it is necessary to pay attention to the recommendations of manufacturers, data for a particular power unit, since even the engines of one brand and similar power requires significantly different.

Replacement process

Replacing the oil in a boot engine gearbox usually produces each season. This ensures the long safety of the initial characteristics of the engine and reduces the likelihood of damage to individual components. It should be noted that these indicators also depend on how the conservation procedure was performed.

Check the oil level is carried out like this:

• The motor is installed in a vertical position.
• On the left side of the gearbox, the upper hole is located, closed by a plug. Cork cluster, a stick or any item can be replaced into the hole that can replace the dipstick.
• When a stick is dry, it indicates the need for replacement.

Replacing the lubricant is as follows:

1. The unit is hosted in a vertical position. On the gearbox, the drain plugs (upper and lower) are unscrewed, without forgetting to pre-put the container into which the waste material will be stroke.
2. While the oil flows, you need to pay attention to its color. At first, the shade of lubricant will be dark. Special attention should be paid to the color of the spent material during the first replacement. If it is observed in the enclosures of large particles (chips), it is likely to be a problem associated with poor-quality assembly of the gearbox. In particular, this may indicate its insufficient tightness.
3. As the spent lubricant is drained, the jet may drop sharply. In such circumstances, an oil plug was formed in the drain hole. The very same material in the gearbox remains about 60%, so you should not immediately pour new oil.
4. At the end of the drain, it is necessary to replace gaskets on traffic jams. It is extremely recommended to wash a gasoline gearbox. The fuel destroys the glands, as a result, the tightness is disturbed.
5. The bottom hole is twisted and the new grease is poured. Part of such products is sold with special tubes that fill a tight hole in the gearbox.
6. The fill ends when the new lubricant started to flow through the upper hole.
7. If the oils need a lot, then a special pump is inserted into the bottom hole, by means of which the lubricant from the container is discouraged. At the end of the replacement, it is recommended to again check the level of fluid in the gearbox.
8. Tighten the bolts with a little effort, otherwise, with a subsequent procedure, a jackhaft will be required to open the drain holes.
   If we follow the recommendations described above, the motor for the boat will last for many years, without requiring repair and without fail.

Video: Replacing the oil in a boot engine gearbox

Boats have certain features. In accordance with them, manufacturers are developing lubricants. Oil must be changed in the motor periodically. From the correctness of its choice depends the duration of the device.

A lot of varieties of special lubricants are available on sale. How to choose to choose to understand the advice of experts. The main criteria of choice should know every owner of such equipment.

Features of a boat engine

Boat motors "Yamaha", "Mercury", "Tukhatsu" and other manufacturers are distinguished by certain design features. The user who faced the need to maintain such a technique for the first time, should carefully examine all the nuances of this process.

First of all, it should be noted that the automotive oil is prohibited in such equipment. The fact is that a small amount of water can fall into the gearbox. While the motor is new, this does not happen. However, with the wear of rubber seals and seals, this situation is not excluded. Automotive oilMixing with water will turn into an emulsion. In this case, the elements of the mechanism are rapidly destroyed. Soon it will be necessary to change the engine.

Special boat oils for transmissions have a certain set of additives. They prevent the formation of emulsion, prevent the emergence of corrosion. Therefore, only special lubricants should be applied to the boat engine.

Why change the oil?

In the process of its work, moving engine elements can be destroyed due to friction. To this not happen, special lubricants are applied. It can reduce the heating and friction of moving elements, extending the engine life.

The composition of such funds includes a certain set of additives. They enhance the lubricant action, preventing the appearance of corrosion, flushing the contamination and holding them in suspension. Over time, additives lose their protective ability. Pollution, Nagar is starting to accumulate if it does not replace the lubricant on time, they will settle on the surfaces of the parts. Motor will work difficult. Mud particles will destroy the elements of the mechanism. Also, if the water transmission is inserted, rust will be formed. So that this does not happen, the oil should be changed on time.

Specifications

Considering, it is necessary to consider such an important indicatorlike viscosity. It is customary to classify in accordance with the SAE standard. Most engines require an application for the 80W-90 lubricant reducer. For stationary varieties of motors, it is necessary to purchase oil with a viscosity indicator of 85W-90.

This standard is not the only criterion when choosing lubricants for the motor. Many manufacturers label their products in accordance with the API system. It highlights two classes of viscosity for motor boat engines. GL-4 class oil is used to maintain hypoid, conical gears. They have a slight offset of axes when driving. Such motors can work in different gravity conditions. Usually they alternate. After severe load, the engine requires a decrease in revolutions.

grade GL-5 is used for loaded hypoid gears. They have a significant displacement of the axes when moving. To ensure normal engine operation, even in difficult conditions, similar materials have more additives than the means of the previous class.

Original or analog?

Choosing which oil is pouring into a bootter gearboxUsers may encounter a large number of different lubricating products. Its value differs depending on the manufacturer. To do right choiceFirst of all, you must familiarize yourself with the equipment manufacturer's instructions.

In the manual necessarily indicates which oils are allowed to be used for a specific motor. In the manufacture of such equipment, tests are carried out. Not all manufacturers of lubricants provide suitable characteristics of their products.

When running a new engine, it is necessary to apply special oilwhich allows you to use the engine manufacturer. This tool is more expensive than analogs, but its specifications Allows to maintain the integrity of all parts of the motor even with significant overloads. Analogs can be applied after a certain engine life. However, their technical specifications must fully comply with the requirements of the manufacturer.

Engine "Yamaha", "Tokhatsu"

Motors "Yamaha" possess hypoid gears. The manufacturer of the presented equipment has developed a special line of funds that are suitable for such engines. It is called Gear Oil. For all of its motors, the manufacturer recommends purchasing funds with the GL-4 viscosity class.

Similar lubricants were tested in different conditions When developing motors "Yamaha". Their quality and compliance with high technical requirements The manufacturer confirms Yamaha Marine. Oil film, which is formed on moving elements, effectively prevents rust, emulsion formation. It is resistant to elevated temperatures. Oil has good cleaning properties.

The company "TAKATSU" does not provide for applications for its equipment a certain brand of lubricants. Oil manufacturer can be any. However, the technical characteristics of lubricants must correspond to the GL-5 class.

Engine "Mercury"

Choosing oil into the gearbox of the Mercury boat engineIt is imperative to familiarize yourself with the manufacturer's recommendations. This company provides for the use of Quicksilver lubricants for its engines. It includes several variations of transmission oils.

One of the most popular varieties is the PREMIUM series. It is used for motor gearboxes with a capacity of 75 liters. from. And this oil is allowed to be used for boat engines other manufacturers. This is a high-quality, high-tech.

For suspended motors with a capacity of more than 75 liters. With., as well as stationary motors of the MerCruiser class manufacturer created High Performance lubrication. It also notes that mixing oils of various series is prohibited. If initially the motor used a means of a certain class, it is not recommended to change it. The composition of such funds includes various packages of additives that can conflict among themselves.

The amount of oil in the engine

To determine, how much oil pour a boat engine reducerYou must look into the manufacturer's instruction. It contains detailed information about the engine capacity. The motor reducer increases in proportion to its power. However, different manufacturers may differ this indicator.

To determine how much oil is needed to be purchased to carry out equipment, it is necessary to consider the average performance of the presented equipment.

If the motor has power up to 6 liters. p., It will take to pour about 200 ml of oil. With an increase in this indicator up to 18 liters. s., you need to buy more than 370 ml of lubricant. Motor gearbox up to 30 liters. from. It will require about 450 ml of the means, and over 70 liters. from. - 900 ml. This feature must be recognized in the engine instruction manual.

Checking the oil level

Must be monitored in accordance with the manufacturer's recommendations. Depending on the frequency of operation of the boat, as well as equipment loading.

To check the amount of lubricant in the gearbox, you must perform a specific procedure. First, the engine must be installed vertically on the trunk (if the boat stands on the reservoir) or on a special stand. At the top from the left side on the gearbox there is a control opening.

Next, the plug is unscrewed. Insert the probe on the gearbox. Even ordinary toothpick or match will be suitable for this. After removing the probe, its condition is estimated. If it is dry, the oil must be addressed.

Preparation for replacing oil

Considering how to change the oil in a gearbox of a boat engineIt is necessary to pay attention to preparations for this process. Everything necessary materials, Tools should be at hand. The exhaust oil will need to merge into a basin or other capacity. The volume of this dishes need to be selected according to the reducer volume.

It is also necessary to prepare new rubber gaskets for traffic jams. During the work, a special pump will be required if the engine has a greater power and capacity. It will allow you to download the oil inside. For small motors, the lubricant is poured inside through the nozzle. You should also prepare the required amount of new oil.

Change of oil

After installing the motor to the stand, a basin is substituted under it. Below on the engine there is a plug that you want to unscrew. Merges working out. Also unscrewed upper tube. Old lubricant will fire for about 10 minutes. At this time you need to change the glands. Wash gearbox gearbox. It will dampen rubber gaskets, and water will fall inside.

The tube tube with lubrication is inserted into the bottom hole (if the motor is small) or the pump nozzle. Gradually, it is necessary to pour oil inside. It should seem from the upper test hole. Holding the tube or pump, it is necessary to twist the upper tube.

Next quickly need to close the bottom hole. A small amount of lubricant will continue to follow, but it is not scary. After that, the oil level is checked in the upper warning hole. If it is insufficient, the lubricant is added. Reducer wipe, and transmit to a special reception point for processing.

Examined what is oil for a boat engine gearbox, You can choose it yourself and replace.

The user forgets to ask about the type of candle, or oil in gearbox and crankcase. That is why the team of the online store of boat engines The site is ready to provide complete information about the components and consumables for Markouri brand name equipment.

Table 1. Mercury motors brands, oil type and nominal volume, spark plug brand.

Power		Carter oil	Transmission lubrication volume
		1.8 liters SAE 25W-40 viscosity oil can be used at temperatures above 4 ° C. SAE 10W-30 viscosity oil is recommended for use at any temperature.
		3.0l. SAE 25W-40 viscosity oil can be used at temperatures above 4 ° C. SAE 10W-30 viscosity oil is recommended for use at any temperature.

Table 2. Transmission lubrication transmission in Mercury boat motors.

Power		Transmission lubrication volume
	NGK B7HS-10; BR7HS-10.
ME-20 (until 2007)	NGK BPZ8H-N-10
ME-25 (until 2007)	NGK BPZ8H-N-10
	NGK BPZ8H-N-10
	NGK BPZ8H-N-10
ME-75-115Optimax

Replacing the impeller of the Mercury boiler engine cooling with their own hands.

Often comes the time when it is necessary to replace the impeller of the water pump cooling of the Mercury suspended motor. For a more detailed and visual example, we offer you to view the video of the entire replacement cycle.

Very often motor owners water transport Based between the value and quality dilemma: on the one hand, such brands "Japanese", like Honda, Yamaha, Suzuki have already established themselves from the best side, and on the other, reluctance to overpay for the name. We advise you to draw a little west to the market, specifically, to China. After all, in fact, boat motors produced on Chinese conveyors, exactly copy of Japan technology, not only original spare parts, but also wear-resistant details of local production. And this means, the cost of products falls while technology is improved by a jump-shaking pace.
Why do you advise to buy HDX engines? [Click to read] Today we are talking about a specific manufacturer who has conquered the position of the leader in the market of East Asia and gradually imagined on the domestic plant SUZHOU PARSUN CO. So, HDX - boat motors who have actively started developing 10 years ago. Previously, they were known under the Parsun brand, but recently there was rebranding, which only played the manufacturer to benefit. So, what trumps keep a reliable and cheap "Chinese" in the sleeve?
First and immediately: forget the myth about the "one-day" service. HDX boat motors have a return statistics under warranty almost twice below some domestic and Asian brands.
Actively developing engine control electronics: which leads to a significant reduction in fuel consumption, decrease harmful emissions In the atmosphere and impeccable launch of a boat engine.
High-quality assembly - yes, it was in China that the workers began to work on conscience and raise the standards of control while the rest of the world relaxed.
You can quickly and freely find components for HDX motors, without forgetting sometimes to enter the request "Parsun".
Well, to summarize, remind of cost: for the money that you save, you can purchase hundreds of fuel liters and roll back not one successful season. While the HDX horses honestly work out the amount paid, even 120%. The latest novel contention of boat engines on the distributor website is quite successful. The only thing that should be mentioned is not to save on the power of the motor, if the vehicle volumes require, take with a margin. So, from the most high-profile new products recent years more often positive reviews You can hear about HDX F 5 BMS. This aggregate potential is 5 hp It is capable of rolling, and even save on fuel consumption. HDX capacities of a boat at 3.6 kW are enough for four-stroke engine The working volume of 112 cubic meters. Manual start and tie control, a simple box in three transmissions - in a word, all cards in hand.

Want to raise rates? Then pay attention to HDX F 9.8 BMS. This engine combines launch and efficiency, and reliability, and power in its four cycle. Still, the boat engine HDX offers 9.8 hp With a maximum power of 4.4 kW at a working volume of 209 cc. Two cylinders are spinning up to 5,500 revolutions per minute, the motor is able to pull and small fishing boat. And this is despite the fact that the Office remains the same as accessible and child. The company's HDX company went to the market under the auspices of technology japanese companies Japan Engineering Co. Ltd. Previously, the plant Suzhou Parsun Co. (By the way, to this day the largest in China) produced products under the Parsun brand. The company is to create a new generation product at a price, held in a reasonable framework. Suspended boat motors are in demand in a two-stroke and four-stroke. The buyer is invited to choose power from 2 to 90 horse power, optimal weight parameters, fuel and control consumption. And most importantly, the whole products apply 2 years warranty from the manufacturer, so that Chinese engines have already compiled serious competition in the global market.

Tags: Oil replacement in HDX boat engine reducer

In this video, I showed how to change the oil in the boot engine gearbox ... Want to earn ...

Boat Motors, PVC Motor Boats, Riby | Topic Author: Manidipa

01:52 Boat Motor - Oil Replacement in USTIV 436 Views Reducer Boat Motors & Boats - Buy New Boat Motor in St. Petersburg Motomarine Shop in St. Petersburg offers a wide range of products. Buy boats from PVC under the motor (prices will surprise you) here is very simple. Motomarine.Ru Replacing the oil into a boat motor gearbox

First of all, we remind you that to preserve the manufacturer's warranty, all maintenance, including oil replacement in the gearbox, should be carried out by specially trained people in an authorized service center.

In all other cases, you can safely use this instruction.

We will need

1. The container where it is necessary to drain the spent oil;
2. Wide slotted screwdriver;
3. Pasters for traffic jams;
4. Special pump for pumping the oil of large volume if the volume of small oil is filled directly through the nozzle in the tube;
5. New transmission oil;
6. Stand under the suspension boat motor, if the motor is not installed on the trans.

Sequencing

1. Install the motor on the stand with the vertical location of the Deadwood. If the motor is installed on the translate, then the deydwood is also installed in a vertical position. Motor must be installed, slightly raising over the surface.

2. Under the motor I install the container for the drain of the waste oil.

3. Unscrew the bottom drain plug. The oil will begin to merge into the drain tank.

4. Remove the upper stopper. We are waiting for the oil completely stalking from the gearbox (10 minutes). ATTENTION! Some "masters" after the oil drain recommend rinse with gasoline gearbox. In no case cannot be done. Gasoline destroys the glands, after which the water falls into the gearbox, forming an emulsion.

5. Change gaskets on traffic jams (while the exhaust oil flows).

6. Pour acquired fresh oil into the gearbox. For refueling of small volume oil, special tubes (bottles) are used, which have a nozzle tightly inserted into the drain hole. If the volume is large, then apply special pumps. We insert the nozzle (tube) into the lower drain hole and squeeze the oil from the tube (we swing the oil with a large volume of large volumes).

7. Oil pouring stop under the condition that oil began to flow out of the upper test hole, and it is not enough without air bubbles.

8. Holding the tube (pump) tighten the top cork.

9. As soon as possible to minimize the loss of oil, we remove the tube (pump) from the lower drain hole and tighten the drain plug. A certain part of the oil will still flow. If the volume is small, it is not worth worrying.

10. We check the oil level by unscrewing the upper control hole. If there are a lot of oils, it is necessary to add it. Low level Oils can lead to the output of the gearbox.

11. Tighten the plugs tightly. I wipe the oil from the gearbox. Exhaust oil transfer to special enterprises for further disposal.

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Http://motomarine.ru Boat motors and boats - buy a new boat engine in St. Petersburg Motomarine Store in St. Petersburg offers a wide range of products. Buy boats from PVC under the motor (prices will surprise you) here is very simple. Motomarine.ru.

Maxim (Manidipa)

Boat Motor - Oil Replacement in USTIV Reducer - YouTube

Replacing the oil in the gearbox of the BELUGA boat engine. BoatsClub ...

Today, finally came their hands before replacing the oil in the lower gearbox of their boot engine. The case it seems to be completely simple, but remembering how I was tormented at one time with the first independent replacements, I decided to summarize my modest experience in the form of an article in the hope that it would become useful to someone.

So, the replacement of oil in the lower gearbox (UNITE) of the boat engine is recommended to spend once a season, and usually it is one of the boat preparation procedures for winter storage. This is especially important if the boat is stored not in the heated garage, but on the street. If the water hit the lower unit during operation, it will surely freeze in strong frosts, expand and can damage the gearbox case or the glands on the propeller shaft:

To replace the oil in the gearbox, there are two holes closed with bolts with a sealing washer - upper and lower. On my motor, the upper hole is marked as "Oil Level", and the bottom as "Oil Drain". To replace the oil in the lower uniform, the minimum of the tool will be required - screwdriver for unscrewing traffic jams and manual pump for injection of oil:

The size and quality of the screwdriver in this matter is very critical. When I changed the oil for the very first time, on my first boat, I tried to use the biggest screwdriver that was found among the home instrument. Apparently, it turned out to be not big enough, since after a few attempts to unscrew the plug, I almost threw the slots on it. It is good that enough diligence will stay on time, go to the nearest Canadian Tire and buy there the biggest screwdriver that only was able to find there. With her, my business went much better. So the screwdriver should be big, with a tight and wide "shovel":

It should be as close as possible to enter the slots of the plug and fill it out along the entire length of the slot:

Pump for oil is also a very useful device. At first I tried to pump oil into the gearbox using nozzles that are issued for each oil bottle when you buy it at the dealer:

This is a direct way to pour oil throughout the garage floor or drive within a single meter radius from the motor. It is extremely uncomfortable to use these nozzles, given the fact that the oil certainly needs to be downloaded through the bottom hole up pressure, and it is necessary to squeeze almost the entire bottle without a residue. For one "benchmark" it will never be possible to do so, so it is necessary to consightly squeeze it many times, there is no check valve there, and the nozzle to the hole fit very loosely ... In general, you can present this picture. Therefore, since then, before changing the oil, and always hold the absorbent powder and paper towels at the ready:

And the pump makes it easy to avoid all these difficulties. So I essentially recommend buying it in my farm. I bought this pump in Baspeco for $ 10 or $ 15, I do not remember exactly, so the money is small, but it helps it very well. Although on the package of this pump it was written that the adapter included only to the Yamaha and Tohatsu engines, he also came to my Honda, and most likely it will be good for Mercury and Nissan engines.

The gentle oil itself (Germany "Gear Oil") should be applied only what is recommended by the manufacturer of the motor, any "substitutions" from the storage of manufacturers is extremely undesirable. The boat engine works much more intense and "harder" automotive, and attempts to save on consumables For it, fraught with very unpleasant surprises with further operating.

So, everything is ready, proceed to replacing the oil. The motor must stand strictly vertically. The first thing we unscrew the upper tube:

Then we substitute the pallet under the motor and unscrew the bottom stopper:

It is very important not to miss the moment when oil runs from under the plug. We must carefully make sure that it runs precisely oil, and not water. If the water or water-oil mixture is, it is bad, it means that the seals on the propellers shaft do not hold and pass water into the gearbox. After that, it is necessary to give oil to stroke from the gearbox. Since this is a special viscous oil, the flow process may take quite a long time, you need to wait at least half an hour:

After all the oil stalks, you can start the fill of the new one. The pump adapter is screwed into the lower drain hole:

And the oil supply tube is already screwed to it. The pump itself with is inserted into the bottle with butter and snaps on its neck:

After that, light presses on the pump handle, the oil is pumped into the gearbox until the oil is absorbed from the upper hole:

It is very important to remember that gear oil should always be downloaded from the bottom up so that there are no air pockets left!
When all the oil is injected, the plug is screwed into the top hole first, then the pump is disconnected along with the drain pressure adapter and the lower plug is placed as quickly as possible. Since the upper tube is already screwed down, after disconnecting the poppumps, a vacuum is created at the top of the gearbox that does not allow to run away through the drain hole while the plug is tightened there. It seems like a simple idea, but how much I had to suffer with rapidly running oil while I did not tell her more experienced colleague at work! But now, if everything is done neatly, the oil replacement passes easily and quickly, but the oil spill along environment And my clothes almost never happens.

After the lower plug is twisted, the upper and and the propeller shaft is repeatedly scrolled by hand. There should be no air bubbles in the gearbox. Then both plugs are twisted completely and attached to the already mentioned screwdriver. It is not necessary to cry very much at the same time, but the plugs must be screwed up to a complete foot with a good effort. The main thing is not to break the slots!

And do not rush to throw out the old oil! It should be merged into a transparent plastic or glass container and give to stand for several days. During this time, under the action of gravity, heavier water, if it has inheritance in oil, it will be on the bottom of the bottle and it will be possible to see it with a naked eye. If this happens - then this is again a bad sign, witnessing that the glands on the Propeller shaft pass water and that it is time to replace them. And this is a pretty expensive operation ...

And even after that, the exhaust oil should not be thrown away. It in itself is very high-quality and viscous, and he can be used in household. For example, lubricate the door loops in the house or in the car, or the rollers and hinge garage doors:

Well, it seems to be everything, I hope my modest experience will help some nice owner of the boat to avoid mistakes that at least I have done with my first engine.