Oil For 2-Stroke Motors

Oils for 2-stroke engines differ from four-stroke engine oils in composition and structure. When choosing engine fluid for a two-stroke engine, it is necessary to familiarize yourself with the principle of operation of this type of power units, generally accepted classifications and approvals of manufacturing plants.

Principle of operation

The 2-stroke engine does not have a crankcase, it is lubricated with a mixture of oil and fuel, which completely burns out in the combustion chamber of the engine cylinder. Four-stroke engine fluids do not come in contact with fuel. Due to differences in operating principles, different requirements are imposed on lubricant manufacturers for the properties of motor fluids for 2-stroke and 4-stroke drives.

A 2-stroke engine requires oil, which will completely burn out in the combustion chamber, without leaving sediment and soot. It is important that unburned oil residues entering the exhaust gases are biodegradable.

For four-stroke power units, the main parameter of motor mixtures is viscosity. the ability of fluids to maintain their structure under various operating conditions to ensure the formation of a strong lubricating film on the drive elements.

Standards and specifications

There are 2 oil standards for push-pull drives:

  • 2T. used for power units with air cooling;
  • TC-W3. used in water-cooled motors.

According to API classification, two-stroke drive motor oils are divided as follows:

  • TA. used for motors of small mopeds, motorcycles, lawn mowers;
  • TV. for powerful motorcycle engines;
  • TS. applicable to motors on land;
  • TD. designed for outboard drives.

Engine mixtures for two-stroke engines of motorcycles and other machines are classified by JASO

  • FA. meet the requirements of developing countries;
  • FB. meet the operating conditions in Japan;
  • FC. smokeless motor mixtures;
  • FD. smokeless motor fluids with improved performance.

Video: Oil For 2-Stroke Motors

If the fluid is correctly selected, it will extend the life of the motor, otherwise the operational period of using the vehicle will be reduced.

Watch the video about oils for 2-stroke engines:

Viscosity, base

2 stroke engines have design features, to ensure their normal operation, it is necessary to choose the oil corresponding to the viscosity class specified by the manufacturer of the motorcycle, car and other units. Only the manufacturer can indicate the optimum viscosity for a particular type of engine.

If the viscosity is too low, the oil will not protect the engine parts from friction. this will lead to wear of the power unit. Using too thick a lubricant worsens combustion processes, increases friction losses, and leads to increased carbon formation.

When choosing between mineral and synthetic motor mixtures, follow the rules:

  1. Mineral is used in worn motors due to the presence of a large amount of soot in them.
  2. Synthetics are used in modern drives equipped with an injection or dosage system. Synthetic fluids are characterized by enhanced properties, so pouring them into power units with high mileage is not recommended.
  3. Observe the tolerances and recommendations of the vehicle dealer.

There are BIO oils with accelerated biodegradation on the market. Their price is 50% higher than conventional lubricants. This cost is due to the possibility of combustion products to completely decompose in water, the additive BIO, which is part of these liquids, does not affect the operation of the motor.

Oil For 2-Stroke Motors


Try to buy lubricants with characteristics that are consistent with the recommendations of the vehicle manufacturer. Incorrectly selected fluid will lead to coking of the piston rings, cause increased carbon formation, accelerate engine wear.

Fluids with a competent selection of additives, an excessive amount of which (over 20% of the total volume), can lead to deterioration of the drive operation can provide the motor with proper operation. Consider: the correct ratio of chemical elements is contained in certified products that meet international standards.

When choosing an oil-gasoline mixture in a 2-stroke engine, pay attention to the dosage indicated by the manufacturer. If your motor should run on a liquid with a ratio of 1: 100, do not use mixtures of 1:50. From your care envy drive resource.