The smooth molecular structures of AMSOIL synthetic motor oils create less intrafluid friction than the relatively rough
molecular structures of conventional motor oils, while their high film strengths reduce metal-to-metal friction. Engines
running AMSOIL synthetic motor oil waste less energy overcoming intrafluid and metal-to-metal friction, allowing them to
deliver more power to the transmission. Vehicles respond quicker and achieve faster top speeds.
Increased Fuel Economy
The low intrafluid friction and metal-to-metal friction reducing properties of AMSOIL synthetic motor oils also improve fuel
economy by delivering more of the energy created through combustion of the air-fuel mixture to the transmission.
Unlike conventional oils, AMSOIL synthetic motor oils contain no light molecules that may be lost to volatilization.
Volatilization thickens conventional oils and makes them more difficult to pump, while the low volatilization of AMSOIL
synthetic motor oils helps them maintain their original viscosity and fuel economy benefits.
Cold Temperature Starting
AMSOIL synthetic motor oils retain better cold temperature cranking and pumping characteristics than petroleum oils. Because
AMSOIL synthetic motor oils resist viscosity increases in cold temperatures, they allow the crankshaft to turn fast enough
to start the engine in cold winter temperatures. Resistance to cold temperature viscosity increases also allows AMSOIL
synthetic motor oils to maintain their pumpability for fast post-startup engine lubrication and excellent wear
Increased Vehicle Life
Viscosity Retention – The superior chemistry of AMSOIL synthetic motor oils helps them
maintain thick protective oil films in high temperature operating conditions. Many competing motor oils contain low quality
additives prone to rupture during periods of mechanical stress, affecting the oil's ability to maintain a thick protective
oil film during high temperature operating conditions and exposing critical engine parts to increased levels of wear.
Film Strength – Acids form as combustion byproducts, such as water, combine with
oxidation byproducts or fuel or air constituents such as sulfur or nitrogen. Acids corrode metals, while heat helps acids
damage metal engine parts very rapidly. AMSOIL synthetic motor oils contain highly effective acid-neutralizing additives,
something especially beneficial for diesel engines.
Water is a normal combustion by-product that condenses on engine surfaces once they cool. Allowed to remain on these
engine surfaces, it promotes corrosion. Stored engines are particularly prone to corrosion damage. AMSOIL synthetic motor
oils form a water occlusive barrier on metal surfaces, protecting them from corrosion.
Foam Suppression – Engine operation can whip air into motor oil and impair its ability
to provide adequate wear protection. Anti-foam additives in AMSOIL synthetic motor oils enhance wear protection by
collapsing entrained air bubbles.
Contaminant Suspension – Dirt, engine wear metals and combustion by-products such as
soot work to accelerate engine wear. Motor oil reduces the damage caused by these contaminants by carrying them to the oil
filter, where they become trapped. AMSOIL synthetic motor oils are formulated with highly effective dispersant additives
that keep contaminants suspended in the oil stream until they reach the oil filter.
Diesel engines are particularly subject to soot contamination. AMSOIL synthetic motor oils reduce damage caused by soot
by keeping soot particles from agglomerating. As soot agglomerates and particles grow in size, wear can occur. Furthermore,
viscosity increases which may lead to filter plugging.
Heat Stress Control
Heat Transfer – Excessive engine heat promotes excessive engine wear and can lead to
part failure. The saturated molecular structure of AMSOIL synthetic motor oils withstands higher temperatures than
conventional oils before the oil breaks down. AMSOIL synthetic motor oils possess a high degree of thermal conductivity,
providing cooler running engines.
Thermal Stability – The uniformly sized and shaped molecules and uniformly strong
intermolecular bonds of AMSOIL synthetic motor oils remain intact during high temperature operation, protecting engines from
varnish and coke and providing constant lubrication protection during extreme temperature operation.
Low Volatility – The light molecules present in conventional oils tend to volatilize in
the presence of heat, thickening the oil and making it more difficult to pump, stressing the engine, increasing wear and
decreasing fuel economy. Because they contain no light molecules that volatilize in the presence of heat, AMSOIL synthetic
motor oils maintain their superior protection qualities in high temperature operating conditions.
Oxidative Stability – Certain oxidation products, such as sludge, interfere with the
engine's ability to function, while others, such as acids, contribute to engine damage. AMSOIL synthetic motor oils are
highly supplemented with multiple premium grade oxidation inhibitors, effectively resisting oxidation.
Reduced Repairs – The superior protection and performance benefits of AMSOIL synthetic
motor oils reduce engine component failures, saving time and money spent on engine repairs.
Reduced Maintenance – The superior formulations of AMSOIL synthetic motor oils allow
them to last much longer than competing conventional and synthetic motor oils. While competing motor oil companies typically
recommend 3,000-mile drain intervals, AMSOIL synthetic motor oils are recommended for drain intervals of up to 25,000 miles
or one year, whichever comes first.
Reduced Solid Waste – Because AMSOIL synthetic motor oils may be used over eight times
longer than conventional oils, AMSOIL customers produce significantly less used oil waste.
Reduced Air Pollution – Because AMSOIL synthetic motor oils improve fuel economy, they
effectively reduce harmful exhaust emissions.
Save Money – AMSOIL synthetic motor oils save customers money by extending engine life,
reducing repairs and maintenance, increasing oil drain intervals and increasing fuel economy.
AMSOIL cost savings
Motor Oil Comparison Test - How did the major brands compare?