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AMSOIL Series 2000 Synthetic 2-Cycle Racing Oil


AMSOIL Series 2000 Synthetic 2-Cycle Racing Oil (TCR) is a formulation of carefully selected pure synthetic esters and premium additives, providing excellent performance in both air cooled and water cooled two-cycle motors. AMSOIL TCR is fortified with corrosion inhibitors to prevent rust from condensation at shut down and during off-season storage. The AMSOIL racing formulation is based on extensive research conducted both in-house and in independent laboratories. AMSOIL TCR provides superior lubrication, protection and performance for two-cycle motors in the most demanding applications.

Product Code: TCR


Reduces Friction and Heat

In extreme conditions where operating temperatures are high, two-cycle motors lose power and torque. The aluminum pistons expand from heat and cause an increase in friction. AMSOIL Series 2000 2-Cycle Racing Oil is a special blend of synthetic esters and additives that reduce friction, prevent metal-to-metal contact and provide maximum protection against piston scuffing.

The ASTM D-4863 two-cycle motor lubricity test measures torque output at 350 C (662 F). Higher torque output means better lubricity and more power. This test is a requirement for NMMA TC-W3 and API TC specifications. As the graph shows, AMSOIL Series 2000 2-Cycle Racing Oil minimizes power loss due to friction.

Keeps Engines Clean

AMSOIL Series 2000 2-Cycle Racing Oil contains ash-less detergent additives that have been tested and proven to provide superior cleanliness in both air and water-cooled motors. AMSOIL Series 2000 2-Cycle additives inhibit the formation of deposits in the ring grooves, in the combustion chamber and on the exhaust power valves. With AMSOIL Series 2000 2-Cycle Racing Oil rings do not stick and spark plugs do not foul from carbon deposits, and exhaust power valve maintenance is minimized.


AMSOIL TCR is fully compatible with TC-W3 lubricants and most other two-cycle oils.


AMSOIL Series 2000 2-Cycle Racing Oil is recommended in air or water-cooled two-cycle motors where NMMA TC-W3, API IC or JASO FC oils are specified. Excellent for both racing and recreational use in snowmobiles, outboard motors, personal watercraft, motorcycles and AIVs. Not recommended for use with nitro-methane or methanol alcohol.

New Motors Under Warranty

The use of AMSOIL TCR will not void new motor warranties. AMSOIL TCR meets the performance specifications shown above and may be used in two-cycle motors requiring oils meeting the specifications shown.

Mix Ratio

Maximum performance is attained at a 50:1 mix ratio under both racing and recreational use.  Richer mix ratios are not recommended.

Use as packaged in all oil injection systems

50:1 Gasoline-To-Oil Ratio

Gallons of Gasoline

Ounces of Oil to be Added














Synthetic Injector and 100 to 1 Pre-Mix 2-Cycle Oils


Reduce friction and wear, improve throttle response and deliver maximum power. Clean-burning ashless formulations prevent plug fouling and carbon deposits. Deliver quick, dependable starts. Reduce smoke and emissions and won't "load up" during prolonged idling. Provide outstanding cold temperature flow. Contain special anti-rust agents for off-season storage. Product Codes: AIO, ATC


Meet or Exceed the Following

  • API TC


Maximum protection for:

  • Outboard motors
  • Snowmobiles
  • Motorcycles
  • All air-cooled and water-cooled 2-cycle engines.
  • Chainsaws
  • ATVs


AMSOIL Synthetic 2-Cycle Oils are superior quality lubricants which provide maximum protection and outstanding performance in all two-cycle gasoline engines. 

Maximum Wear Protection

AMSOIL Synthetic 2-Cycle Oils are high film strength oils that virtually eliminate metal to metal contact so piston scuffing is prevented and wear is reduced. The high lubricity of AMSOIL Synthetic 2-Cycle Oils reduces friction so operating temperatures are controlled and maximum engine performance is achieved.

Reduced Engine Deposits

AMSOIL Synthetic 2-Cycle Oils contain top performing additives which have been tested and proven to minimize high temperature deposits. These oils resist oil breakdown from heat so they do not form gum, varnish, sludge or sticky deposits. Spark plug fouling and excessive carbon build-up in the combustion chamber, exhaust port and ring area are greatly reduced. In addition, the clean burn characteristics and lean mix ratios reduce smoke and exhaust emissions.

Prevents Rust and Corrosion

AMSOIL Synthetic 2-Cycle Oils contain special rust and corrosion inhibitors, providing excellent off-season storage protection.

Outstanding Low Temperature Performance

Both AMSOIL Synthetic Injector Oil and 100:1 Pre-mix Oil mix readily with fuel even in low temperatures. However, AMSOIL Injector Oil with its -45F pour point and SAE #4 miscibility and fluidity rating, is better suited for severe cold. It is recommended for use in injector systems as well as 50:1 pre-mix. Also, AMSOIL injector oil will help ease starting because it does not solidify or get gummy in the motor which allows it to turn over more freely.


AMSOIL Synthetic 100:1 Pre-Mix 2-Cycle Oil (ATC) is recommended for all water-cooled and air-cooled pre-mix applications. A mix ration of 100:1 is recommended for normal duty service in applications such as motorcycles, outboard motors, weed eaters, lawn mowers and chain saws. Richer mix ratios of 50:1 to 80:1 are recommended for severe duty service such as racing applications, ultralight "kit" type airplanes and for hot operating industrial use motors that run for extended periods of time.

AMSOIL Synthetic 100:1 Pre-Mix 2-Cycle Oil is recommended for all pre-mix applications specifying TC-W3, API TC, JASO FC and ISO EGD. It is recommended for use with gasoline fuels only, and is not recommended for oil injection systems.


AMSOIL Synthetic 2-Cycle Injector Oil (AIO) is recommended for use in all summer and winter two-cycle injector applications and for pre-mix applications at 50:1 mix ratios. Use AMSOIL Synthetic 2-Cycle Injector Oil wherever TC-W3 or API TC oils are specified in water-cooled or air-cooled motors. AMSOIL Synthetic 2-Cycle Injector Oil is recommended for all two-cycle injector applications, including outboard motors, snowmobiles, motorcycles, ATVs and personal watercraft. AMSOIL Synthetic 2-Cycle Injector Oil is compatible with and recommended for two-cycle applications using catalytic converters.

AMSOIL Synthetic 2-Cycle Injector Oil is compatible with other synthetic and petroleum TC-W3 type oils and may be mixed with them. It is recommended for use with gasoline fuels only.


The mix ratio for AMSOIL 100:1 2-Cycle Oil is as follows:

  • 1.3 oz. oil per 1 U.S. gallon gasoline
  • 0.34 oz. oil per 1 liter gasoline
  • 8 oz. oil per 6 U.S. gallon gasoline

For AMSOIL Injector Oil, mix at engine manufacturer's recommended mix ratio in either pre-mix or oil injection systems. Engines modified for racing should use 50:1 mix ratio, with adjustments to the mix ratio being made based on head temperatures and spark plug examination.


The use of AMSOIL Synthetic 2-Cycle Oils will not void engine warranties. Warranties are based upon the use of oils meeting specific tests. AMSOIL Synthetic 2-Cycle Oils meet the current requirements as listed and thus are perfectly suited for use in any new engine without affecting the validity of the warranty.


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