Oil in gasoline for chainsaws: proportions, how to dilute, ratio

In what proportion to mix gasoline with chainsaw oil

The heart of any chainsaw is a two-stroke internal combustion engine. Its performance, reliability and durability are dependent on the fuel used as well as regular maintenance.

Mixing gasoline with oil

One of the significant differences between two-stroke internal combustion engines of a chainsaw and four-stroke engines, for example, automobile engines, is the need to add oil directly to gasoline for a chainsaw in the gas tank, and not to a separate oil system. At the same time, it is very important to strictly observe certain proportions of gasoline and oil, otherwise the breakdown of the chainsaw cannot be avoided. Oddly enough, but this rule is not followed by everyone. Many chainsaw owners start experimenting with proportions or do not add lubricant at all in order to save money. As a result, serious problems arise that are more expensive to fix than just buying a lubricant.

Running in

A new chainsaw immediately after purchase has a slightly lower performance than similar models that have been in operation. The rated power of the engine is reached only after 6-10 full tanks of the fuel mixture have been used up.

However, it should be noted that running in an imported chainsaw (Husqvarna, Shtil, Partner) has significant differences over domestic chainsaws. So, for example, it is not necessary to develop several tanks of the fuel mixture at idle speed. Running-in consists of cyclic work with a minimum load on the motor: first, the sawing of soft wood is carried out for 1-2 minutes, then 20-30 seconds of idling. This prevents the formation of a large burn-on layer that occurs during prolonged operation of the chainsaw at idle speed.

Chainsaw break-in must be carried out on high-quality AI-92 gasoline without any additives and branded oil, which is recommended by a specific manufacturer. You can find out what and how much oil you need to fill in gasoline for a chainsaw in the instructions for the chainsaw itself.

In no case should products intended for low-speed engines, as in the photo, be diluted with gasoline.

The proportion of oil and gasoline for a chainsaw of the corresponding brand:

• STIHL with power less than 1.5 kW - (1:40);
• STIHL with a power of more than 1.5 kW - (1:50);
• Partner - (1:33);
• Husqvarna with power less than 1.5 kW - (1:40);
• Husqvarna with a power of more than 1.5 kW - (1:50);
• Jonsered - (1:33).

The prepared mixture can be stored for up to two months, and then there is a risk of engine breakdown due to the inevitable decrease in the octane number of gasoline.

Gasoline to chainsaw oil ratio during normal use

Any chainsaw will need a fuel-oil mixture for operation - gasoline and two-stroke lubrication.

Gasoline requirements:

• fresh, without turbid sediment, unleaded;
• the content of gasohol (ethanol) should not exceed 10%, and methyl butyl ether (MTBE) should not exceed 15%;
• octane number should not be lower than 92;
• no alternative fuels or additives allowed.

To understand what kind of oil should be poured into gasoline for a chainsaw and how much can be diluted, it is necessary to look for the manufacturer of the required saw on the branded product label. Under no circumstances should ordinary engine oil be diluted - this can lead to carbon deposits, abundant smoke emission and increased engine wear.

Ideally, only branded oil should be used. Chainsaw manufacturers, of course, do not produce their own chemicals, but they monitor the quality of certain brands, and this fact is indicated on the packaging. The label also indicates in what proportion to mix gasoline with chainsaw oil. This is often:

For mixing, a gasoline-resistant container is taken, into which a liter of 92 gasoline and 30, 25 or 20 ml of oil are poured, respectively. For convenience, the liquid can be measured using a twenty-cube medical disposable syringe (in this situation, it is quite suitable for reusable use). It shows how to dilute oil with gasoline for a chainsaw.

When mixing, you need to understand how to dilute gasoline with chainsaw oil:

• You can only mix in a clean, dry container.
• Under no circumstances should you mix directly in the chainsaw tank.
• Gasoline must first be poured into the container, and then oil, otherwise it may "stick" to the bottom and mix insufficiently.

• The ratio of the components should not be changed. An excess of lubricant leads to unnecessary waste, and a lack of lubrication leads to overheating and the appearance of defects.
• The use of gasoline with an octane rating above 92 is economically impractical, especially since 98 often contain additives that negatively affect the chainsaw engine.
• In no case should practice be used.
• It is recommended to mix gasoline with oil just enough so that nothing remains after work, as the octane number of gasoline drops over time.

In order for the chainsaw to start "from a half turn", not to stall and break too often, it is necessary to strictly observe the ratio of the mixture poured into the gas tank. How to dilute gasoline for a chainsaw Stihl, Husqvarna, Partner and other foreign manufacturers can be found in the instructions for these devices themselves. In this case, gasoline is usually taken 92, and branded two-stroke oil.

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