AMSOIL Oil Change Interval Calculator

Normal service is defined as personal vehicles frequently traveling greater than 10 miles at a time and not operating under severe service conditions. Severe service includes commercial or fleet vehicles, excessive idling, daily short trips under 10 miles, frequent towing or hauling, or driving in dusty conditions.

AMSOIL Signature Series provides the longest drain interval for gasoline engines at up to 25,000 miles in normal service, while Signature Series Max-Duty offers up to 60,000 miles for heavy-duty diesel applications.

Yes, many AMSOIL synthetic motor oils are formulated for extended drain intervals beyond OEM recommendations. However, always check your warranty requirements and consider oil analysis to verify extended drain capability for your specific application.

AMSOIL is one of the best full synthetic oil brands with many of their products supporting extended drain intervals, some up to 25,000 miles between changes.

AMSOIL Synthetic ATV/UTV Motor Oil should be changed according to your OEM recommendations or extended intervals based on oil analysis.

AMSOIL Synthetic Small Engine Oil should be changed according to your OEM recommendations or extended intervals based on oil analysis.

AMSOIL Synthetic Marine Engine Oil can be used up to 2X the OEM recommendation for conventional petroleum oil, not to exceed 15,000 miles or 1 year, whichever comes first.

AMSOIL Synthetic Dirt Bike Oil should be changed according to your OEM recommendations or extended intervals based on oil analysis.

AMSOIL Synthetic Metric Motorcycle Oil can be used up to 2X the OEM recommendation, not to exceed 10,000 miles or 1 year, whichever comes first.

AMSOIL Synthetic V-Twin Motorcycle Oil can be used up to 2X the OEM recommendation, not to exceed 15,000 miles or 1 year, whichever comes first.

AMSOIL Synthetic European Motor Oils should be changed according to your vehicle manufacturer's recommendations or extended intervals based on oil analysis.

AMSOIL Signature Series Max-Duty Synthetic Diesel Oil can be used up to 3X OEM recommendation (not to exceed 60,000 miles, 600 hours or 1 year) for heavy-duty applications, or up to 2X OEM recommendation (not to exceed 25,000 miles or 1 year) for turbo-diesel pickups.

AMSOIL Heavy-Duty Synthetic Diesel Oil should be changed according to your OEM recommendations or extended intervals based on oil analysis.

AMSOIL Premium Protection Synthetic Motor Oil is recommended for up to 25,000 miles or 700 hours of operation or 1 year (whichever comes first) in normal service, or up to 15,000 miles or 700 hours of operation or 1 year (whichever comes first) in severe service.

AMSOIL Break-In Oil should be changed after 500 miles for proper engine break-in.

AMSOIL DOMINATOR Synthetic Racing Oil intervals should be determined through oil analysis based on your specific racing application.

AMSOIL Z-ROD Synthetic Motor Oil should be changed according to your OEM recommendations or extended intervals based on oil analysis.

AMSOIL Signature Series Synthetic Motor Oil is recommended for up to 25,000 miles or 700 hours of operation or 1 year (whichever comes first) in normal service, or up to 15,000 miles or 700 hours of operation or 1 year (whichever comes first) in severe service.

For AMSOIL OE Synthetic Motor Oil, AMSOIL recommends following your OEM oil change interval recommendation or using the longest drain recommendation of the OEM.

AMSOIL XL Synthetic Motor Oil is recommended for up to 12,000 miles or 1 year (whichever comes first), or longer when recommended in your owner's manual or indicated by electronic oil life monitoring.