The Proportion Of Oil And Gasoline For The Stihl Chainsaw

Stihl chain oil (overview of oils)

The Stihl range of chain lubricating oils comprises three types of products:

  • Forestplus;
  • Bioplus. for chains;

When working, it is necessary to use the type of lubricant that best suits the conditions and duration of work. Let’s consider each of the oils for the Stihl chain in more detail.

Stihl HP Ultra Review

Unlike conventional Stihl HP oil, HP Ultra is designed for high engine loads during operation and is recommended for use on professional chainsaws. This oil is synthetic. In order for consumers NOT to confuse diluted fuel, it has a green color, respectively, a ready-made mixture of gasoline with Stihl HP Ultra also has a greenish tint.

There are only two packages of this oil. This is Stihl HP Ultra 100 ml and 1 liter with dispenser.

The Proportion Of Oil And Gasoline For The Stihl Chainsaw

The cost of Stihl HP Ultra is almost twice the price of Stihl HP and for this reason it is less popular in our country.

Stihl HP Ultra has a four-year shelf life.

Stihl lubricant for two-stroke engines

Stihl engineers develop oils that are optimally suited to all two-stroke engines fitted to Stihl chainsaws and trimmers and beyond. The Stihl two-stroke lubricant range includes several product options:

  • Stihl HP;
  • Stihl HP Ultra;
  • Stihl HP S

Which oil to choose

If you are a regular user of a chainsaw and DO NOT use it daily for 6-8 hours, while working only in the summer, then you can use a regular Stihl HP to prepare the fuel mixture for your chainsaw. The optimal ratio of the price and quality of the lubricant made it popular in millions of gasoline tool users.

BioPlus chain oil overview

Bioplus is plant-based, which allows it to decompose in the shortest possible time when it gets into the soil. It is this property that has been awarded the European environmental safety mark. According to the information available on the manufacturer’s website and is Official, BioPlus has been tested according to OECD 301 B.

For maximum convenience of consumers, it is packed in 4 types of containers, these are:

  • Liter bottle.
  • Canister with a capacity of three liters.
  • Five liter canister.
  • Plastic twenty liter canister for those who use a chainsaw on a daily basis and use a large amount of lubricants.

BioPlus price may vary depending on the region of sale.

BioPlus has a shelf life of four years. Brown color.


Synthplus is a semi-synthetic oil that retains its properties even under the most severe conditions. It is able to maintain performance at minus 25 degrees. Synthplus mixes well with BioPlus, which allows you to easily switch from one type of oil to another.

Synthplus has a long shelf life, which, if properly stored, reaches seven years. SynthPlus oil color, brown.

Stihl SynthPlus is packaged in containers of the same capacity as BioPlus.

Stihl HP Review

Stihl HP is a chain saw lubricant formulated to meet high quality requirements and designed to lubricate internal engine parts during engine operation. It is made on a mineral basis and has good combustion performance (has a low level of emission of harmful substances during combustion).

Original Stihl HP is red and sold in Stihl branded packaging.

It comes in several packaging options, the most popular of which is a one liter bottle with a built-in dispenser. You can also find Stihl HP in a canister of five, ten and fifty-five liters.

The smallest package of Stihl HP, which is convenient to use in cases where you need to prepare only one liter of fuel mixture, is a twenty-gram plastic bottle.

Also, the company produces one hundred gram bottles of Stihl HP, which can be used to prepare five liters of fuel mixture.

Shelf life, if stored in a closed container, is 4 years.

HP Super

Designed for high-performance engines and four-stroke engines made using 2-MIX technology. The performance is slightly worse than that of the HP Ultra, therefore, at the moment, the HP Super is NOT supplied to the counters of authorized Stihl dealers.

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Mixing ratio

Very often people ask the question, how much oil per liter of gasoline is considered the norm. It is easy to answer it, because the instructions for any Stihl chainsaw, as well as on the additive package, indicate that when using original Stihl products, the proportion of oil and gasoline should be 1:50. This means that for one liter of fuel, it is necessary to add 20 ml of the additive.

Fuel mixture: the proportion of oil and gasoline for the chainsaw

The chainsaw engine is the “heart” of the tool, so it is very important to use a properly prepared fuel mixture.

The fuel mixture for a chainsaw is prepared from two components. oil and gasoline. Chainsaws are equipped with two-stroke engines, so oil is not added to the lubrication system (as in a four-stroke engine), but directly to gasoline. At the same time, it is very important to observe the correct proportions of ingredients, of course, in no case should you try to work on pure gasoline, because in this way you will very quickly “kill” the chain saw.

If we talk about what kind of gasoline to pour into the chainsaw, then it will be optimal to use fuel with an octane rating of A-95, in this case the savings on fuel can turn out to be deplorable. Often European manufacturers indicate that it is possible to use A-90 or A-92 gasoline, but in the post-Soviet countries the quality of gasoline is inferior to European, therefore, in our realities it is better to use higher quality gasoline.

As for the proportion of the oil-oil mixture itself, everything is simple here: you must follow the instructions for the tool. All manufacturers of chainsaws indicate the required ratio in the instruction manual or in the passport of the tool, in addition, the proportions for refueling the chainsaw may differ depending on the model of the chain saw. As a rule, the proportion of oil and gasoline to a chainsaw of famous manufacturers is a ratio of 1:40 or 1:50, which means 1 part of oil for, for example, 40 parts of gasoline. Now arithmetic 1 liter of gasoline = 1000 ml of gasoline, divide by 40 and we get 25 ml of oil. If you do the same to a 1:50 ratio, you get 20 ml of oil per 1 liter of gasoline. As for budget chainsaws made in China, the situation is slightly different. The ratio of gasoline to chainsaw oil made in China 1:25, that is, divide 1000 ml of gasoline by 25, we get 40 ml of oil. The thing is that in branded chainsaws, a solid assembly and the distance between the pistons and cylinders in the engine is much less than in Chinese chainsaws, therefore the required amount of oil differs almost twice.

In order to measure the correct amount of oil, use a conventional medical syringe of sufficient volume.

Another subtlety. Fill the dry gas canister with gasoline first and then oil. The procedure, on the contrary, is fraught with a low quality fuel mixture, because the oil is denser, it will stick to the bottom of the canister. what a good mixing here.

Be sure to prepare the fuel mixture in the Canister and fill the ready-made special fuel into the gas tank! Never ready and DO NOT mix it directly in the fuel tank of your chainsaw!

If you figured out the question of how to breed gasoline for a chainsaw, then on storage conditions and shelf life of the fuel mixture it is worth saying a few words. It is best and easiest to prepare a petrol-oil mixture for 1 liter of gasoline, it is recommended to do this immediately before working with the tool. Chainsaw fuel tanks have a volume of 0.3 to 1 liter. In the conditions of domestic use, the entire volume of the prepared fuel mixture is rarely used in one session, so the remainder can be saved until the next session. It is necessary to store the fuel mixture in a special Canister for gasoline, in a dry, dark place. It is optimal to count that the shelf life of the finished mixture will be 7-10 days. The fact is that the oil on the market now is NOT synthetic, but organic, that is, natural. After 10 days, all lubricating properties are lost, gasoline simply “eats” the oil. Naturally, it is no longer possible to use such fuel, this can cause breakdown and failure of the chainsaw.

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At the end of the work, it is necessary to drain the fuel mixture, start the chainsaw, the tool will stall (so that there is a dry carburetor in the saws) and now you can leave it in the next operation session.

Unsuitable fuel mixture must be disposed of.


ForestPlus Mineral Chain Oil.

Packaged in three types of containers, a liter bottle and canisters of five and twenty liters.

Forestplus has the lowest shelf life among the Stihl oils, which is only three years if stored properly.

What happens if you do not take into account the manufacturer’s recommendations?

In case of violation of the rules for the preparation of fuel and lubricant mixtures and non-observance of the proportions when adding oil to gasoline in Stihl 180 chainsaws; the following problems arise:

  • With an increase in friction, the wear of the working surfaces of parts will increase.
  • Insufficient lubricant will cause bearings to fail.
  • The full functioning of mechanical assemblies is disrupted due to premature wear of parts, their service life is significantly reduced.
  • When using low-grade grades of gasoline and oils, the performance of the unit decreases with the subsequent breakdown of fundamental units and parts.

The fuel is prepared before refueling the saw, do not allow excessive contact with oxygen. After finishing work, the remaining mixture must be drained.

Proportion for chainsaw Friendship

For engines use fuel of low octane numbers. The unit shows the highest performance when filling the engine with AI-76 and AI-80 gasoline.

It is recommended to dilute gasoline and oil according to the following algorithm:

Consumer reviews of Stihl saws are mostly positive. It is lightweight and affordable. There are some complaints about the low power of the instrument. But for occasional use at home, it is quite suitable. And if you use the correct proportions of oil and gasoline for your Stihl chainsaw, it will last for many years.

Important conditions

Power plants in chainsaws are internal combustion engines, fueled with certain brands of gasoline diluted with the required parts of oil.

The main fuel component is the AI ​​grade. It is not recommended to use below or above 92 octane. Suitable for many types of mechanized sawmills of domestic or foreign manufacture.

The ideal ratio of gasoline to chainsaw oil:

  • Increases the productivity of the unit;
  • Increases the service life;
  • Creates money savings.

Chainsaw “Stihl”: which gasoline oil to use?

A number of manufacturers producing equipment also develop their own consumables, which are adapted to the operation of a particular engine. So the Stihl company produces oil exclusively for its equipment. It is supplied with special additives, which are able to compensate for the quality of the fuel, improving lubrication and cleaning of the fuel mixture. It should be noted that Husqvarna HP oil is universal and can be used for all chainsaws. It can be used at a temperature not lower than 10 degrees.

And also for two-stroke engines products of the following brands are used: Sadko, Kraissmann, Oleo-mac Prosint. If you use a Stihl chainsaw, how much oil per liter of gasoline should you fill? The ratio will be 25 ml of additive per liter of fuel. It must be remembered that there are oils for chains and motors. They are intended for different purposes and are NOT interchangeable. The use of chain oil for the preparation of a fuel and lubricant mixture leads to tool breakage.

Stihl chain oil (overview of oils)

The Stihl range of chain lubricating oils comprises three types of products:

When working, it is necessary to use the type of lubricant that best suits the conditions and duration of work. Let’s consider each of the oils for the Stihl chain in more detail.

What gasoline and oil is better to choose for refueling a Stihl chainsaw

The durability and reliability of the chainsaw is determined not only by the conditions of its operation, but also by the quality of the fuel used for refueling. In addition to the special conditions of use, when grinding parts in the first few refuelings, attention must also be paid to the quality of the fuel mixture.

Professional Chainsaws Stihl Equipped with two-stroke engines, requiring high-quality fuel. a metered mixture of high-octane gasoline and oil, designed for engine operation at high speeds. The correct choice of gasoline and oil for the Stihl chainsaw is the key to a long and successful operation of this unit.

Proportions for Swedish Husqvarna chainsaws

Depending on what power is required to be obtained from the units, select the appropriate component dilution:

Along the way, we inform you that only unleaded gasoline of the AI-92 or AI-95 brands is used. Leaded combustible product is considered a poor choice for internal combustion engines, as it shortens the engine’s service life.

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Recommended brands of fuels and lubricants for powering chainsaws

The specific brand of gasoline for the saw is always given in the manufacturer’s instructions. It is recommended to strictly follow it.

There are 2 types of oil:

  • For engine,
  • For lubricating the chain and bar.

DO NOT confuse or misuse them. This is guaranteed to damage the tool. Repairing it can cost almost as much as a new saw.

The most popular chainsaw lubricating oils are:

  • Husqvarna
  • Kreissman
  • Sadko
  • Stihl

Each container with branded oil always indicates the proportion of oil and gasoline for a chainsaw (Stihl, Husqvarna, Partner, Ural), which must be adhered to when making a mixture.

Step by step instructions for refueling

If you want to refuel your chainsaw, you need to follow a simple algorithm:

The ratio of the amount of oil and gasoline for the fuel mixture

The proportion of oil and gasoline for a chainsaw is usually made up according to two recipes:

  • 50 servings of gasoline per serving of engine oil
  • 40 servings of gasoline per serving of engine oil

If the chainsaw was recently purchased and has NOT yet been operated, then the fate of the lubricant is increased by a quarter. The same amount is poured into fuel when cutting at temperatures below 2 degrees.

It is NOT difficult to get such a mixture. Almost every modern saw is equipped with a special two-section container. Oil is poured into a smaller part of it, and gasoline is poured into a larger part. The lids of both parts are tightly twisted and the container is turned over, shaken thoroughly. This achieves a complete and homogeneous mixing of both components.

If there is such a special container, then you can use any gasoline-resistant plastic container with a one liter lid and a disposable syringe for 5-10 cubes. The gasoline tank must first be cleaned of various pollutants and water. After that, one liter of 92-95 gasoline is poured into it.

In parallel, 20 ml of oil is drawn into the syringe. If filling is done in cold weather, then you need to take 24-30 ml. Gently pour it into a container with gasoline. It is tightly closed with a lid and shaken thoroughly until the components are completely mixed.

Why you need to mix oil and gasoline

When using the saw, gasoline should always be mixed with oil. The reason for this is the design features of a two-stroke internal combustion engine. It does not have a dedicated lubrication system for parts (as in other GIS) and, accordingly, its cylinders with O-rings, crankshaft, bearings and connecting rods Must be lubricated directly in the process of obtaining fuel.

The proportion of oil and gasoline for a chainsaw: how to dilute

All modern chainsaws are equipped with a two-stroke engine. Its long and trouble-free functioning directly depends on whether the proportion of oil and gasoline is correct for the chainsaw. The variety of tool brands and the features of each of them are a prerequisite for the fact that this procedure is not easy for most novice users of chainsaws.

What will happen if you pour working off into a chainsaw

When the owner of the chainsaw has been using it for a while, they may want to do some modification to the tool. And it’s good if his desires are limited to the purchase of various attachments that expand the functionality of the chainsaw. But some go further. they start experimenting with the gasoline and oil that their saw runs on.

If in gasoline we have already spoken earlier (most modern dust requires it with a high octane number. not lower than 92-95), then in oil it is worth mentioning separately. In many motorists, a significant amount of used engine oil accumulates during the operation of a car. And therefore, some have a desire to use this material for refueling a chainsaw.

If this is done, then it is guaranteed that the engine will fail. This is primarily due to the low lubricity of the recycled oil. It will burn with a lot of black soot. The metal particles contained in the oil will first clog the fuel filter (these are particles that are larger), and then the cylinder O-rings will fail. A metal suspension in the oil will damage both the surface of the cylinders themselves and the bearings.

Some “innovators” try to use the working off to lubricate the chain itself and the block on which it is located. It also will NOT lead to anything good. What exactly will happen can be seen on the attached.