How to Dilute Gasoline For Patriot Trimmer

Trimmer, or lawn mowing – a tool that can not be done in the household. At the same time, its reliability, efficiency and long service life depend on many factors.

Preparing for the first launch of the lawn mowers

For example, the quality of fuel. This means that you need to choose the right oil for the trimmer, observe the proportions when adding to gasoline and the rules for refueling the device.

For the effective operation of the trimmer, it is necessary to select oil for two-stroke engines. This is due to the lack of an oil sump in such a device. The following classification is distinguished depending on the chemical composition of the oil:

Oil for 2-stroke engines is characterized by good solubility and feature of complete combustion. For the trimmer, it is recommended to use a lubricant that is suitable for devices with an air cooling system.

Moreover, the last of them is most preferable. Often, manufacturers of lawn mowers produce the right oil, so you can make your choice easier if you select the appropriate brand fluid.

How to dilute gasoline with oil for trimmer instructions with description

Gasoline for the trimmer you need to choose unleaded with a stroke number of 92 or As practice shows, AI gasoline can lead to breakdowns of the device, which is a dubious saving. Other factors affect the quality of the fuel, for example, the use of a special lubricant for lawn mowing and diluting it in a separate container. It is also recommended to use special canisters designed to store gasoline.

It is necessary to breed gasoline for the trimmer in the correct proportion.

An insufficient amount of oil can lead to poor lubrication of the lawn mowing elements, which contributes to rapid wear. The correct ratio can be found in the instructions for the trimmer.

Rules for choosing gasoline

Most often it is equal. To obtain such proportions in 1 liter of gasoline, you need to add 40 ml, 25 ml and 20 ml of oil, respectively. Diluting gasoline with lubricant directly in the fuel tank is unacceptable; moreover, the proportion of oil and gasoline must be strictly observed.

If you ignore this rule, then the operation of the trimmer motor may be unstable, because of which it will quickly fail. It is not recommended to use plastic bottles or canisters for this purpose.

Preparation of the fuel mixture: the proportion of oil and gasoline for a chainsaw

This is due to the fact that gasoline has the ability to dissolve plastic, which means that part of the plastic can get into the fuel tank, which can lead to damage to the carburetor. The mixture can be stored for no more than three months, so it is better to dilute gas in such quantity that it is enough for several uses.

How to Dilute Gasoline For Patriot Trimmer

Refilling the trimmer fuel tank is easy. To do this, place the tank so that the lid is placed on top. The amount of fuel depends on the trimmer model. This information is indicated in the instructions, there is also a mark on the tank directly. This can cause the fuel to spill over into the inlet pipe and fuel filter, which can cause engine damage or ignition of the fuel.

What kind of gasoline to fill

The correct proportion and adherence to mixing and dressing technology will help extend the life of the trimmer. In this case, it is recommended to choose only a quality product of the corresponding brand. Of course, with small deviations from the correct proportion, there will not be anything terrible, but over time, such exploitation still results in malfunctions. Save my name, email and website address in this browser for my subsequent comments. Do you like the article?

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Specifications for the trimmer contain links to recommended fuel and lubricants. At the same time, the octane number of the brand of gasoline is indicated specific, but in the part of oils there is a lengthy explanation about the need to use a product of a particular manufacturer. For convincing reasons, it is indicated that only when these recommendations are followed, the company extends the warranty. What is it: a marketing move or oils from other manufacturers do not meet the requirements? The answer is in this article.

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Why mix trimmer oil with gasoline

The two-stroke engine has a simple and, at the same time, extremely efficient design:

  • The piston makes a working stroke every second stroke;
  • Cylinder lubrication is made with oil dissolved in gasoline;
  • The removal of combustion products occurs due to compression, without a special mechanism.

All this led to the creation of a family of small engines that have successfully adapted to domestic and professional equipment:

  • Trimmers;
  • Chainsaws;
  • Motorcycles;
  • Various tilleries.

Due to the design features, it was possible to achieve the desired fuel consumption only on small engines with power in the range of 15 – 20 hp. This indicator looks especially good in the range of 1 – 5 hp. Here, the fully low weight and dimensions of the engine correspond to gas mileage.

With increasing size, the area of ​​the inlet and outlet channels increases. The process of gas removal and fuel supply is deteriorating sharply. In this regard, the transition to a more efficient combustion system of the gasoline mixture, which would require the presence of forced engine maintenance systems, was required. Four-stroke models thereby seized the palm among the power units of high power. Their combination into multi-cylinder structures allowed the creation of special systems related to the formation of the composition of the fuel mixture, lubrication and other things, which favorably affected the consumption of gasoline.

The lubrication of the rubbing elements of the piston and cylinder of a two-stroke engine occurs with oil, which is in a certain proportion in the composition of the fuel. Gasoline burns, and oil settles on the surface of the cylinder, reducing the friction of the rubbing parts. Lack of lubrication leads to damage to the cylinder, up to jamming. In the case of an excess, under the influence of high temperatures, a thermally modified product is deposited in the annular grooves. Compression drops, and with it the power.

How to mix oil with gasoline

Engine oil is used to supplement trimmer gasoline. Mixing is carried out in a certain proportion. Manufacturers have a different volume ratio: from 1 to 50 to 1 to 20. In the technical specifications there is a link to this. Care should be taken with a small proportion of the oils. A small inaccuracy leads to oil starvation of the engine, reduces its resource.

Video: How to Dilute Gasoline For Patriot Trimmer


There are products in which a proportion of 1 to 20-40 is indicated. It is better to refuse the use of such a lubricant. A wide range of mixtures indicates low product qualities. The occurrence of piston rings, with the constant use of such grades, is almost guaranteed.

Motor oils, type M-8, are added in a proportion of 1-20. In high-speed engines, their use is undesirable. The cycle between the supply of the mixture is so small that it will cause an excess of lubricant in the cylinder. Trimmers have low revolutions, therefore they allow the use of low-grade grease. Due to the initially low resource, you can not worry about the coking rings. First, there will be a complete wear of the equipment.

The principle is not the use of recommended oil or from other manufacturers. The main thing is to dilute gasoline with trimmer oil in accordance with the proportions in accordance with the characteristics of the product. The refusal of service workshops to guarantee only on the basis of using a different brand of grease, but with acceptable parameters, is illegal.

The longevity 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 lapping parts in the first few gas stations, attention must also be paid to the quality of the fuel mixture.

Stihl professional chainsaws are equipped with two-stroke engines requiring high-quality fuel – a dosed mixture of high-octane gasoline and oil, designed for high-speed engine operation. The right choice of gasoline and oil for Stihl chainsaw is the key to a long and successful operation of this unit.

Gasoline selection

The first question that a user is faced with before starting work is which gasoline to pour into a Stihl chainsaw.

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Petrol for Stihl chainsaws is filled exclusively with unleaded high-octane, that is, with an octane rating higher than 90. If you fill it with low-octane, this is fraught with overheating of the engine, jamming of the piston and engine failure. Therefore, it is optimal to pour gasoline grade AI-92 or AI-95 into a chainsaw, but this raises the question of fuel quality.

Poor AI-92 may not reach the declared octane rating, and AI-95 often contains many additives that do not bring any benefit to the engine. In addition, if the additives are of poor quality, they do not last long, and after a few days, the purchased fuel can turn into low-octane, which is not suitable for a chainsaw engine.

At the same time, a good 95 can harm the piston system – “burn” it. Thus, some users have found a way: to refuel the chainsaw with AI-92 gasoline mixed with AI-95. This achieves the optimal balance between the octane number and the amount of filler impurities.

Oil selection

Unlike four-stroke engines, Stihl 180 chainsaw oil is poured directly into the gas tank, pre-mixed with gasoline. It is recommended to fill in the chainsaw oil specified in the instructions for this model.

It can significantly shorten the life of the motor, and if traces of such a substance are found in the cylinder-piston group, the instrument will be deemed removed from the warranty, i.E. It will not be subject to warranty repair or exchange.

Synthetic and mineral oils for Stihl chainsaws are sold in bottles or cans of different capacities: from 100 ml to 5 liters. Minerals have a lower cost, and semi-synthetic and synthetic ones provide complete combustion during engine operation, i.E., the absence of soot and a minimum of toxic compounds in the exhaust.

In addition, synthetic oils retain their qualities in a much wider temperature range, and also contain special additives that are useful for engine operation: antioxidant, detergent, preservative, etc.

You can choose engine oil for your tasks depending on the model of the saw and the frequency of its use: the oil consumption during the operation of the device is low, and given the shelf life of semisynthetic and mineral lubricants, there is a risk of simply not having time to use even a liter bottle to the end.

So with the small estimated volumes of work, you can not buy a bulk canister, but limit yourself to a bottle. Only Stihl mineral greases do not have a shelf life.

Stihl Oil

Stihl produces its own oil for its tool. High-quality Stihl 2-stroke engine oil is highly lubricating.

Consider the table of the range of oils for chainsaws from the official website of Stihl.

Here we see two types of motor oils:

  1. HP
    • Mineral base
    • Has a shelf life of 4 years,
    • Minimum application temperature: .10 ° C
    • Available in volumes from 20 ml to 55 liters.
    • HPUltra
      • Synthetic
      • Has a shelf life of 4 years,
      • Burns completely in the piston group,
      • Biologically safe and decomposes in 21 days by more than 80%,
      • Low smoke
      • Minimum application temperature: .25 ° C
      • Available in volumes of 100 ml and 1 liter.

      The manufacturer also in the description for lubricants suggests how to dilute the mixture for refueling the saw – in a proportion of 1:50.

      How to breed

      The Stihl saw mixture is prepared by mixing high-octane gasoline and two-stroke engine oil. The proportion of oil and gasoline for a chainsaw is as follows: if the power of the unit does not exceed 1.5 kW, the ratio will be 1:40 (i.E. 25 ml of oil per liter of gasoline), and at a power above this value – 1:50 (20 ml 1 l).

      Looking at the table of proportions, we will analyze, using the example of two saws of different power, how to mix maslobenzene.

      1. For a low-power STIHL MS 180 with a 2-stroke engine, the dilution will be in a proportion of 1:40. She has a fuel tank volume of only 0.25 liters. In order to mix fuel with oil for one refueling, we need 0.25 ml of oil per 0.25 liter of gasoline.
      2. For the STIHL MS 660 heavy duty professional chainsaw, oil and gasoline must be diluted 1:50. In this model, the fuel tank has a volume of 0.825 l. In order to understand how much oil to pour on such a volume of gasoline, we multiply 0.825 by 20. It turns out that 16.5 ml of motor oil is required.

      In practice, of course, one does not have to calculate what proportion of the lubricant will be diluted in the volume of gasoline per refueling. Typically, the fuel mixture is diluted in a volume of 1-2 liters, which is enough for several refueling chainsaws.

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      It is necessary to breed gasoline for the Stihl chainsaw in a separate canister, in no case pouring the components separately into the gas tank of the saw. In these engines there is no oil pump and the possibility of its installation, so only finished fuel is poured into the tank. There are even special canisters with two necks on sale to make it easier to dilute the mixture, but you can add oil to gasoline for a chainsaw and an ordinary canister.

      It is best to observe the proportions of refueling a chainsaw as accurately as possible: excess oil will create carbon deposits on candles and pistons and will provoke detonation during fuel combustion. This can reduce engine life. In addition, the saw user in this case is forced to inhale exhaust gases with unburned fractions. At the same time, excess gasoline can damage the pistons due to insufficient lubrication.

      Some craftsmen advise you to use a plastic bottle in case of the absence of special measured accessories: a full lid (from the same bottle) of oil is poured into a half-liter container filled with gasoline. The output is an approximate ratio of 1:50.

      The amount of the mixture for refueling is best calculated in advance based on the estimated scope of work and the declared consumption of this engine. The tank volume in most chainsaws is about 0.5 liters, a 2 kW engine will consume about 1.2 liters per hour of operation (for more precise saw characteristics, see the instructions). Thus, it makes no sense to prepare the mixture in volumes exceeding 3 dressings in a row.

      Before starting the preparation of the mixture, it is recommended to thoroughly clean and dry the neck of the canister and the area around it to avoid the ingress of impurities: dust, water, etc. The same is done with the tank before refueling: the lid and neck are cleaned of dust and adhering dirt, so that it does not get into the gas tank, and then into the engine.

      Proportions of gasoline and oil for Stihl trimmer

      German manufacturer of high-quality cutting tools Stihl, in addition to chainsaws, produces motor mowers. This is an indispensable tool for mowing grass and lawn trimming, characterized by lightness and mobility.

      The lawn mower, or trimmer, also has a two-stroke engine and is fueled with a fuel mixture. For a Stihl trimmer, a 1:50 ratio is recommended (for 5 liters of gasoline, 100 ml of oil).

      Useful Tips

      When calculating the proportions, remember that it is better to pour oil a little than to save on it: the formation of soot is dangerous only to a significant excess of lubricant, and a slight excess will not harm the engine. If it is not enough, the consequences can be more dangerous.

      When mixing fuel for a Stihl chainsaw, the manufacturer recommends first pouring oil into the canister, then adding gasoline and then vigorously mixing the components. But the practice of use shows that the oil can “stick” to the walls of the canister and mix poorly, so it is better to carefully pour the oil into gasoline and mix.

      It is better not to leave the remains of the fuel mixture in the tank in order to extend the life of the sealing gum and other parts subject to chemical damage. After the saw stops, the fuel must be drained and disposed of: with long-term storage (more than a month), the octane number and other physicochemical properties of the mixture decrease and it becomes unsuitable for safe use.

      In addition, after the gas tank is empty, you need to start the saw engine and let it idle until it stops on its own – this will mean that the carburetor is also spared the rest of the fuel mixture.

      It is important to remember that the long-term operation of the equipment is largely dependent on the user. Saving on fuel in the case of a chainsaw in the future can be much more expensive – non-warranty repair of a failed saw or the purchase of a new unit. Compliance with the manufacturer’s instructions in most cases helps to understand the principles of operation of the device and extend its trouble-free and trouble-free operation.