AMSOIL DOMINATOR 2-Stroke Racing Oil

AMSOIL DOMINATOR 100% Synthetic 2-Stroke Racing Oil

AMSOIL DOMINATOR 100% Synthetic 2-Stroke Racing Oil is built for one thing: winning.
It is made for engines that live at full throttle and high rpm.

What Makes DOMINATOR Different From Regular Two-Stroke Oil

Built For High Heat And High RPM

Race engines are not gentle.
They see long pulls at wide-open throttle and sudden throttle chops.
Temperatures spike fast and stay high.

Dominator uses tough synthetic base oils that keep their strength under those conditions.
The oil film hangs on at very high rpm and heavy load.

This helps protect:

• Piston skirts and ring lands
• Needle and roller bearings
• Rod and main bearings

The goal is simple.
Hold a strong film between moving parts when the engine is trying to tear it away.

Race-Focused Anti-Friction Chemistry

Racers want power and reliability at the same time.
Dominator uses anti-friction additives tuned for race conditions.

Less friction means:

• Quicker revs off the line
• Stronger pull out of corners
• Less wasted energy as heat

At the same time, the oil still has strong wear control.
That balance is what makes it a racing product, not just a generic two-stroke oil.

Clean-Burning Protection In Extreme Conditions

Controls Deposits And Ring Sticking

Two-stroke engines can build carbon fast.
Rich jetting, big throttle and high compression all add to the problem.

If the oil is wrong, you can get:

• Stuck rings
• Heavy carbon on the piston crown
• Plug fouling and misfires

Dominator is blended to burn cleaner in hot race engines.
It resists heavy deposit formation and helps rings stay free in their grooves.

Clean rings mean:

• Better sealing
• Stronger compression
• More repeatable power from moto to moto

Helps Keep Power Valves And Exhaust Ports Clean

Many modern performance two-strokes use power valves in the exhaust port.
If those valves gum up, they can stick or move slowly.

That can hurt power in the mid-range and top end.

Dominator’s synthetic formula and detergent package help reduce sticky deposits.
That gives the valves a better chance to stay free and move as designed.

Resists Plug Fouling

Dirty oil and rich mixtures often foul plugs.
This is not what you want on the start line.

Because Dominator burns cleaner, it helps reduce wet, dirty build-up on plug tips.
You still must jet correctly, but the oil will not fight you.

Where DOMINATOR Shines

Motocross, Supercross And Off-Road Racing

Motocross and off-road racing beat up engines.
High jumps, deep ruts and endless throttle changes load the motor constantly.

Dominator is a strong choice for:

• Two-stroke motocross bikes
• Arenacross and supercross builds
• Hare scramble and enduro race bikes that run hard

In these settings, the oil must handle:

• High rpm down long straights
• Sudden engine braking into corners
• Hot, dusty race days with limited airflow

Dominator helps the motor stay protected when you ride at the limit.

Snowmobile Racing And High-Performance Sleds

Two-stroke sleds can make serious power.
Long pulls on lakes, hillclimbs and deep powder rides punish the engine.

Cold air can fool you.
Even in freezing weather, internal engine parts get very hot.

Dominator is popular in many racing and performance sled setups.
It handles:

• High-load clutching
• Long full-throttle runs
• Sudden throttle chops when you set up for corners

Matched with the right fuel and ratio, it helps the engine stay alive in harsh winter racing.

Karts, Drag Racing And Other Specialty Builds

Race karts and other custom two-stroke projects rev extremely high.
They often use aggressive port timing, high compression and tight clearances.

Dominator is designed for engines like these.
It focuses on:

• Strong film strength at very high rpm
• Good scuff protection under detonation risk
• Clean running when fuel and timing are pushed

Always follow your engine builder’s advice on oil choice and premix ratio.
Dominator belongs in engines that are inspected and serviced more often than casual trail machines.

Mix Ratios And Usage Basics

Premix And Oil-Injection Use

Dominator is commonly used as a premix oil.
A normal starting point is 50:1, or 2.6 ounces per U.S. gallon of gas, unless your tuner says otherwise.

Some racing engines and setups may use richer ratios.
The right mix depends on:

• Engine size and design
• Compression and porting
• Fuel type and race length

Dominator can also work in many oil-injected racing applications.
Check the equipment builder’s guidance before switching any injection system.

Racing Use Versus Everyday Trail Riding

Dominator is a racing oil first.
It is not the best match for long-term, low-rpm trail cruising or general recreation.

For casual sleds, bikes or outboards that run many easy hours, AMSOIL offers other two-stroke oils.
Those are tuned for longer service intervals and broad OEM coverage.

Use Dominator where you want the most protection and performance in a true race environment.

Companion Product #1 – AMSOIL Quickshot

Why Fuel Treatment Matters In Race Engines

Today’s pump fuel is not always friendly to small, high-output engines.
Ethanol can pull in moisture and cause phase separation.
Old fuel can leave gums and varnish in carbs and injectors.

That is where AMSOIL Quickshot Gasoline Treatment and Stabilizer comes in.

Racers pair Quickshot with Dominator to:

• Help keep fuel fresh between events
• Reduce problems from ethanol-blended gasoline
• Keep the whole fuel path cleaner over time

Clean Fuel Systems And Sharp Throttle Response

Quickshot contains strong detergents.
These detergents target deposits in:

• Carburetor jets and passages
• Injector tips and fuel rails
• Combustion chambers and plug tips

A clean fuel system helps your engine:

• Start easier
• Idle more smoothly
• Respond faster when you crack the throttle

When you combine Quickshot with clean-burning Dominator, you support both sides:
fuel delivery and lubrication.

Protection Against Ethanol And Moisture

Ethanol can attract water from the air.
This water can cause corrosion and poor running, especially in seasonal equipment.

Quickshot is made to deal with that.
It helps keep small amounts of water suspended so they can pass through and be burned.
It also helps protect fuel system parts from rust and corrosion.

For race bikes and sleds that sit between events, that extra layer of protection is very helpful.

Companion Product #2 – AMSOIL Powersports Antifreeze & Coolant

Cooling For Hot-Running, High-Rev Engines

Many modern two-stroke race engines are liquid cooled.
Good oil cannot save an engine that is constantly overheating.

AMSOIL Powersports Antifreeze & Coolant is designed for these conditions.
It is pre-mixed 50/50 with high-purity water, so it is ready to pour.

This coolant helps:

• Control operating temperature in hard racing
• Protect against boil-over in heavy load and slow airflow
• Keep clearances stable so the engine stays happy

Long-Life Protection And Clean Cooling Passages

Powersports Antifreeze & Coolant is built for a long service life when used as directed.
It is formulated to protect:

• Aluminum cylinders and heads
• Copper, brass and bronze components
• Common gasket and hose materials

It is free of several additives that can cause scale and build-up.
That helps keep passages clean and flowing.

Clean passages mean better heat transfer and more stable engine temperatures.

All-Season Coverage

This coolant gives both freeze and boil-over protection.
That matters if you race in cold climates or in very hot weather.

Paired with Dominator, it lets your engine run hard while staying within a safe temperature range.

Putting Together A Race-Ready Fluid Package

Dominator + Quickshot + Powersports Coolant

When you combine all three products, you build a simple but strong system:

• Dominator handles friction and wear inside the two-stroke engine.
• Quickshot handles dirty, ethanol-blended fuel and keeps the fuel path clean.
• Powersports Antifreeze & Coolant handles engine temperature and corrosion in the cooling system.

Together they support:

• Strong, repeatable power
• Cleaner combustion and better throttle response
• More stable operating temperatures under long, hard runs

Who Benefits Most From This Combo

You will benefit most from this triple setup if you:

• Race motocross or off-road on a two-stroke
• Run a high-output two-stroke snowmobile
• Compete in kart racing or other two-stroke racing classes

These engines are stressed and expensive.
Using a matched set of fluids gives you a margin of safety when you push the limit.

Tips For Getting The Most From DOMINATOR

Before Race Day

• Mix only as much fuel as you will use soon.
• Use the octane rating your engine builder specifies.
• Add Dominator at the correct premix ratio.
• Add Quickshot at the recommended treatment rate.
• Shake fuel containers to blend the mix well.

Label your fuel cans clearly so nobody grabs the wrong one.

During The Season

Watch key signs of engine health:

• Spark plug color and cleanliness
• Compression readings over time
• Engine temperature and coolant level

Clean plugs and stable compression are good signals.
If you see big changes, talk to your tuner or builder and adjust jetting, timing or ratio if needed.

Storage Between Events Or Seasons

If the machine will sit:

• Treat the last tank with Quickshot.
• Run the engine long enough to pull treated fuel through the system.
• Check coolant strength and level before storing.

Dominator will continue to protect internal surfaces, while Quickshot and the coolant help guard the fuel and cooling systems.

Dominator Versus Other AMSOIL Two-Stroke Oils

Racing Oil Versus General-Use Oil

AMSOIL makes several two-stroke oils.
Each has its own job.

Dominator is focused on:

• Short, intense racing use
• High compression and high rpm
• Engines that are serviced often

Other AMSOIL two-stroke oils are better for:

• Long trail rides
• Everyday sled use
• Marine and outboard engines
• Utility and work machines

If you ride casually for many hours at light load, a general-use AMSOIL two-stroke oil is usually the better choice.
If you are chasing trophies and lap times, Dominator is the sharp tool you reach for.

Final Thoughts On AMSOIL DOMINATOR 100% Synthetic 2-Stroke Racing Oil

Dominator is built for riders and racers who do not take it easy.
It gives you:

• Strong oil film at extreme rpm and load
• Clean-burning performance that fights deposits
• Protection for pistons, rings, bearings and exhaust parts

Paired with AMSOIL Quickshot and AMSOIL Powersports Antifreeze & Coolant, it becomes part of a full-system defense plan.
Oil, fuel and cooling all work together to keep your race engine running at its best.

If you run a serious two-stroke race machine on dirt, snow or asphalt, this three-part AMSOIL combo is a powerful way to protect your investment and your performance.