AMSOIL Signature Series 0W40 Synthetic Motor Oil for High-Performance Engines
A New Level of Motor Oil Technology
0W40 Synthetic Oil is engineered by AMSOIL for enthusiasts seeking maximum protection and performance. AMSOIL Signature Series 0W40 Synthetic Oil is precision-formulated with cutting-edge technology and a longstanding devotion to making the world’s best 0W40 synthetic oil. The result: engine protection that blows the doors off the highest industry standards.
• 75% more engine protection against horsepower loss and wear.1
• 50% more cleaning power vs. AMSOIL OE Motor Oil
• Protects turbochargers 72% better than required2 by the GM dexos1 Gen 2 specification.
• Trusted by professional engine builders
• Guaranteed protection for up to 25,000 miles or 1 year
1Based on independent testing of AMSOIL Signature Series 0W-20, in ASTM D6891 as required by the API SN specification.
2Based on independent testing of AMSOIL Signature Series 5W-30 in the GM turbo coking test.
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Description
AMSOIL Signature Series 0W40 Synthetic Oil defends high-performance engines with a synthetic formula that cuts metal-to-metal wear by 75% compared to industry averages. It clings tenaciously to critical parts like pistons and cams, even under extreme driving conditions.
This oil retains its viscosity and guards bearings and internal components from harsh mechanical stress. Its resistance to low-speed pre-ignition (LSPI) helps protect turbocharged engines where durability is crucial.
With a powerful detergent package, it tackles piston and valve deposits while neutralizing acids more effectively than many competitors, supporting cleaner engines and longer service intervals. The turbocharger protection exceeds GM dexos Gen 2 standards by 72%, providing robust defense for demanding powertrains.
Professionals in engine building and maintenance rely on this oil, which maintains its protective qualities for up to 25,000 miles or one year. Its combination of thermal stability, wear resistance, and deposit control extends engine life while enabling high-performance operation.
- Reduces engine wear by 75% beyond the industry benchmark
- Exceeds turbocharger protection specifications by 72%
- Advanced detergent package improves engine cleanliness
- Guarantees protection for up to 25,000 miles or 12 months
- Preferred by professional engine builders and mechanics
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