AMSOIL 100% Synthetic High-Mileage Motor Oil provides up to 62% better deposit prevention.^WW1

AMSOIL 100% Synthetic High-Mileage Motor Oil reduced sludge by 67%,^VV demonstrating its cleaning power that helps engines last longer and perform better.

AMSOIL Extended-Life Synthetic Motor Oil has 37% more cleaning power to help keep your engine running smoother, longer.^UU

AMSOIL provides up to 16% better low-temperature viscosity than Mobil 1, ^* delivering better protection at startup.^TT

Cold-Cranking Simulator ASTM D5293 (Lower = Better)

AMSOIL delivers outstanding protection in severe service.

AMSOIL CVT Fluid was installed in four Las Vegas taxis, each driven 100,000 miles. As shown in the belt photos below, AMSOIL CVT Fluid delivered outstanding protection in severe-service conditions.

AMSOIL provides better cold cranking viscosity, helping improve wear protection for engine components at startup.^PP

ASTM D5293 Cold Crank (Lower = Better)

AMSOIL Signature Series is fortified with a heavy treatment of detergent additives, delivering 28 percent more acid-neutralizing power than Mobil 1^* and helping engines stay cleaner, longer.^LL

AMSOIL delivers powerful protection. How good is it?

An independent lab compared AMSOIL synthetic motor oil head-to-head against a leading competitor in a 100,000-mile test ^P. AMSOIL provided far superior wear protection and kept bearings looking like.

75% more engine protection against horsepower loss and wear.^A

Sequence IVA Engine Test - Lower Number = Less Wear

AMSOIL Synthetic Motor Oils achieved 100% protection against LSPI.^B

Below is an example of piston damage due to an LSPI event observed during the testing of a competitor's motor oil. The red arrows indicate sections of the ring land that have broken away from the piston.

Protects turbochargers 72% better than required^C by the GM dexos1^* Gen 2 specification.

Signature Series controlled heat and minimized performance-robbing deposits on the turbo-bearing and shaft surfaces.

AMSOIL Signature Series Synthetic Motor Oil has 50% more detergents^D to help keep oil passages clean and promote oil circulation. It provides 90% better protection against sludge^DD.

AMSOIL is barely challenged by the industry-standard testing, demonstrating only a 0.1% viscosity increase. Even when the test length is doubled, AMSOIL delivered twice the viscosity control required by the standard.^GG

Even after doubling the length of the industry-standard test, AMSOIL delivered 40% cleaner pistons than required by the standard.^FF

Provides 47% more wear protection.^G

DOMINATOR^® Competition Diesel Oil delivers 50% more film thickness^Q to withstand high cylinder pressures and protect against wear.

Heavy-Duty Synthetic Diesel Oil provides up to 66% less oil consumption, while Signature Series Max-Duty Synthetic Diesel Oil provides up to 76% less oil consumption.^L

AMSOIL Signature Series Max-Duty Synthetic Diesel Oil provides protection boosted to the max, delivering up to 60% better turbo cleanliness^J and withstanding the extra demands you place on the turbo when pulling heavy loads or updating the tune for maximum horsepower.

Provides up to 2X better rust protection.^K

Test results describe and represent properties of oils that were acquired on the dates listed in Table 1 (see www.amsoil.com/rusttest.aspx). Results do not apply to any subsequent reformulations of such oils or to new oils introduced after completion of testing. All oils were available to consumers at the time of purchase. Testing was completed in November 2017.

AMSOIL delivers powerful engine protection . How good is it? In independent testing compared to a leading brand, AMSOIL provided long-lasting wear protection, keeping cylinder linders looking like new.^DD

AMSOIL 0W-40 Signature Series Max-Duty Synthetic Diesel Oil delivers 4X better cold-temperature performance when compared to SAE 15W-40 oil in ASTM D5293 Cold Cranking Viscosity Test.

AMSOIL resists viscosity breakdown 6X better than Harley-Davidson^* SYN3^* for improved protection against compensator and transmission gear wear.^BB

In industry-standard testing, AMSOIL Z-ROD® completely prevented rust formation while a leading competitor did not.^JJ

AMSOIL Synthetic Marine Gear Lube delivers advanced outboard protection against power loss and gear wear, even with up to 15 percent water contamination.^V

Equipment using SABER Professional was 96% carbon-free ^N.

AMSOIL provides excellent clutch protection^T. How good is it? In extreme simulated-start testing, AMSOIL provided superior wear protection and kept clutch plates looking new.

AMSOIL INTERCEPTOR® Synthetic 2-Stroke Oil delivered outstanding wear protection and cleanliness in a rental sled throughout 1,617 miles (2,602 km) of abuse.^CC

Filtering particles >20 microns fights engine wear.^AA

AMSOIL delivers 18 percent more lubricity than Lucas* and 20 percent more than Sea Foam* for better retention of horsepower and fuel economy.^R

AMSOIL P.i.® restores up to 14% horsepower.^NN

Testing reveals AMSOIL Diesel All-in-One provides significant lubricity improvement in diesel fuels found across the U.S., delivering improved wear protection.^OO

AMSOIL provides corrosion protection Sea Foam^* Motor Treatment can’t match, helping maintain power and performance and keeping metal corrosion free, even when subjected to salt water.^X

AMSOIL Gasoline Stabilizer delivers 8X longer fuel stability than Sea Foam^® Motor Treatment in the triple-length gasoline oxidation stability test (ASTM D525), helping maintain startability and protect against the formation of varnish and gum.^Z

In independent, industry-standard testing, cast-iron and copper plates protected by AMSOIL showed virtually no signs of corrosion.^HH