2-stroke oils for two-stroke engines - Which oil is the right one?

Due to their lightweight construction, 2-stroke engines are used in motorcycles, mopeds, lawnmowers, boats, chainsaws, hedge trimmers and other light appliances/vehicles. The two-stroke engine is a reciprocating piston engine which functions like a gasoline engine. The two-stroke oil is added to the fuel in a ratio of usually 1:50 or 1:100. This is also known as mixed lubrication. Due to this special feature, only specially adapted 2-stroke oils may be used in two-stroke engines. The oil must mix well with the petrol and burn as residue-free as possible. Normal engine oil would settle on the ground in the two-stroke engine and cause the engine to run dry because no more fuel can be drawn in.

There are also two-stroke engines that operate with separate lubrication. The oil is not added directly to the fuel, but filled in separately. Either an automatic system regulates the injection of the oil into the engine compartment after load or there is a strict separation of fuel and oil. In this case, the oil is only directed to the necessary lubrication points such as bearings and cylinder walls.

The two-stroke oils from ADDINOL can be used in many different ways and meet or exceed numerous specifications, regardless of whether mixed or separate lubrication is used. When purchasing, make sure that the OEM releases are complied with and, if in doubt, check the choice of oil with our oilfinder. This works for motorcycles, scooters, mopeds and quads and provides you with the right oil for your 2-stroke engine.

Our 2-stroke oils

ADDINOL SUPER 2T MZ 406

Specifications / Approvals:

API TC

JASO FC, ISO I-EGC

ADDINOL SUPER MIX MZ 405

Specifications / Approvals:

API TC

JASO FB, ISO L-EGB

ADDINOL SUPER SYNTH 2T MZ 408

Specifications / Approvals:

API TC, API TC+

ISO L-EGD, JASO FD

meets the requirements:
CEC L-33-T-82

ADDINOL POLE POSITION HIGH SPEED 2T

Specifications / Approvals:

ISO L-EGD, JASO FD, Lang Tuning

2-stroke oils fully synthetic, semi-synthetic or mineral?

Whether your motorcycle or moped requires fully synthetic, semi-synthetic or mineral engine oil depends entirely on your model and the requirements the oil must meet. The following overview shall serve for the classification of the different 2-stroke oils.

2-stroke oil Composition Features & Benefits Application purpose
Fully synthetic
  • Artificially produced long chain hydrocarbons with a small amount of mineral oils
  • Strong additives
  • Resistance to load peaks
  • Speed and heat resistant
  • Low soot development
  • High acquisition costs
  • Heavy-duty engines with high power output
  • E.g. racing motorcycles, motocross
Semi-synthetic
  • Combination of mineral and synthetic oils
  • Lower additive content
  • Optimized for medium loads
  • Suitable for normal road traffic
  • Good heat and speed resistance due to synthetic oil content
  • Cheaper than pure synthetic oil
  • Low to medium loads in engines
  • E.g. scooters and road motorcycles
Mineral
  • Consist of purified crude oil
  • Natural product
  • Very low at additives or no additives included
  • Less robustness to load peaks
  • Lower temperature resistance
  • Strong soot development
  • Low acquisition costs due to less complicated manufacturing process
  • Older engines with incompatibility to additives
  • E.g. classic cars
Classic two-stroke engine on a moped with mixture lubrication
Classic two-stroke engine on a moped with mixture lubrication

2-stroke oil classifications

Since two-stroke oils can be used in many different ways, it is important to classify the oils required according to their performance. Various standards of central institutions make it easier to keep track. This means that engine oils remain internationally comparable. Always check the manufacturer's instructions before buying a 2-stroke oil to fill the optimal product. For all norms and classes, the rule of thumb is that the later letter in the alphabet or the higher number stands for higher performance.

JASO standard

The JASO (Japanese Automotive Standards Organization) defines standards for engine oils of two-stroke engines as well as Otto four-stroke and motorcycle engines. The two-stroke engines are divided into JASO FA, FB, FC and FD.

Class Operating conditions
JASO FA Light load
JASO FB Medium load
JASO FC Medium pollution and low smoke
JASO FD High pollution and low smoke

ISO standard

The ISO (International Organization for Standardization) also publishes classifications for engine oils of 2-stroke engines. The classification is similar to the JASO classes.

Class Operating conditions
ISO-L-EGB (Global GB) Medium load
ISO-L-EGC (Global GC) Medium pollution and low smoke
ISO-L-EGD (Global GD) High pollution and low smoke

API standard

The API (American Petroleum Institute) also defines minimum requirements for engine oils. In this respect, standards have been set for 2-stroke engines.

Class Operating conditions
API-TA (TSC-1) Light load (mopeds)
API-TB (TSC-2) Medium to high load (scooters and motorcycles)
API-TC (TSC-3) Highest loads (racing bikes)
API-TD (TSC-4) Outboard engines according to NMMA TC-WII (Marine)
Two stroke motorcycle oil change
Our 2-stroke oil fully supplies your machine

Properties of 2-stroke oils

Regardless of which machine the 2-stroke oils are used in, they must meet the following requirements in order to protect the engine and still achieve optimum performance:

  • Maintenance of a constant lubricating film even at high speeds and temperatures (wear protection)
  • Combustion as residue-free as possible (low smoke properties)
  • Good miscibility with the fuel
  • Good corrosion protection properties
  • Good ignition behaviour during cold and warm starts

The 2-stroke oils from ADDINOL fully meet these requirements.

Contact

Sven Köhler

Product Manager Automotives / Gas Engine Oils