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Signature Series: The Measure Of Perform...

See how Signature Series scored vs Schaeffer's and Mobil 1

SIGNATURE SERIES: Brand comparison Testing – Viscosity In the NOACK Volatility Test, Signature Series scored far below the API limit for evaporation and proved it remains where it’s needed most – protecting your engine. Nearly 35 years ago AMSOIL became the first oil manufacturer in the United States to use the NOACK Volatility Test as […]

Should I Change Fluid in a Filled-for-Li...

Should I Change Fluid in a Filled-for-Life Transmission?

What’s up with these “Filled-for-Life Transmissions”? John Baker|Jan 04, 2019 9:10 AM Casual motorists generally take no interest in crawling under their vehicles on a Saturday afternoon. And, when was the last time you heard someone express excitement over dropping their car off at the dealership for maintenance? The automakers know this, which explains the […]

Where Oil Goes and What it Does

bearing surface wear

The Responsibilities of Your Motor Oil A typical engine contains hundreds of parts, none of which could function properly without oil. Far from a simple commodity, oil is a dynamic enabler of performance. It must lubricate, cool, protect, seal, actuate components and more. And it must do it all while exposed to tremendous heat and […]