Internal Combustion engines need heat to operate.  But controlling that heat has always been a problem for engine designers.

When fuel is ignited inside a combustion chamber, an explosion results, forcing the piston downward.  It is this energy that moves your vehicle.

Each explosion elevates combustion chamber temperatures to between 2000º and 3000º F.  this heat is absorbed by the piston and cylinder and then transferrred to other areas of the engine.

Once an engine reaches its operating temperature, excess heat is pulled away with water circulated through the radiator.  But this can only dissipate 60 percent of an engine's heat (air-cooled engines simply direct air flow over the outside of the engine and are even less efficient).  The remaining 40 percent must be colled by an engine's oil.

More Benefits of AMSOIL Quality

AMSOIL Synthetic Oils utilize the world's finest base stocks and additives to provide a unique, unparalleled lubrication film.  It is quite simply the best motor oil in the world.

AMSOIL Proves Its Protection

How well does AMSOIL Synthetic Oil protect at high temperatures?  The top photo demonstrates that AMSOIL Motor Oils (as well as all AMSOIL Lubricants) stay fluid and resist deposit formation.  The thick, black sludge and residues characteristic of conventional oil are not present in AMSOIL.

AMSOIL Synthetic Motor Oils do not thicken, form deposits, or degrade like regular oils.  AMSOIL retains a tough lubricating film that keeps engines clean, cool, and operating smoothly for maximum performance and service life.

Heat, Volatility, and AMSOIL Performance

A motor oil must remain stable at high temperatures to protect today's hot-running gasoline and diesel engines.  The more thermally stable the oil, the better fuel economy, engine cleanliness, and wear protection it provides.

The CCMC/NOACK Volatility Test is an industry-accepted method of determining an oil's thermal stability.  It does so by measuring an oil's rate of evaporation (volatility) at high temperatures and pressures similar to those created in and engine.

Below are two graphs showing motor oils that were subjected to the CCMC/NOACK Volatility Test.  Those with a weight loss greater than 13 percent are unacceptable by CCMC standards.

No oils tested demonstrated greater stability than AMSOIL.  In fact AMSOIL Synthetic and Semi-Synthetic Motor Oils were the only oils tested that passed CCMC's rigid test requirements.

The more you know about oil, the more you'll choose AMSOIL!

Not all oils react the same way when exposed to hot metal surfaces.  This is because not all oils are made the same way.

Conventional Oils Can't Take It

Petroleum-based motor oils start out as crude oil that must be pumped from deep within the earth.  Crude oil is a mixture of thousands of different organic compounds that can be separated through refining processes into products ranging from jet fuel to asphalt.

In the same manner, petroleum motor oil is also a mixture of various compounds.  However, the refining process has no way of separating the compounds that have desirable properties from ones that do not.  There is also no way of removing 100 percent of impurities such as waxes, asphalt and sulfur.

High temperatures also cause conventional oil to volatilize or "boil off."  Lighter fractions of the petroleum evaporate, leaving a thicker oil behind.  This thick oil is less protective and can become more solid than liquid when exposed to cold temperatures.

AMSOIL Synthetic Lubricants are "designed" rather than refined.

AMSOIL Lubricants are composed of select synthetic base stocks and additive systems that give consistent and predictable performance characteristics.  AMSOIL Synthetic Lubricants can in this way be developed to address specific performance requirements.