AMSOIL keeps pistons cleaner even after doubling the length of the industry standard test. In independent testing AMSOIL 5-30 delivered cleaner pistons by 40% than required by standard. 75% more engine protection against horsepower loss and wear.

• 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

Click here to order AMSOIL products go to 4seasonsoils. Independent AMSOIL Dealer in Vacaville, CA.