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How Engine Sludge Forms. And How to Prevent It.
Engine sludge is a black gelatinous substance that wreaks havoc in engines.
July 29, 2026

• Motorcycles
• Product Highlights
AMSOIL Synthetic Motorcycle Oil is Engineered for Extremes
Motorcycle engines require specifically engineered lubricants.
June 9, 2026

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Proven Powersports Performance
AMSOIL thoroughly tests every product in real-world conditions and pushes high-performance machines to their limits.
May 13, 2026

• Testimonials
• Cars & Trucks
• Car Racing
Sportsman Spotlight: John & Krista Long
A racing program rooted in hard-earned experience, mechanical self-sufficiency and the relentless pursuit of performance.
April 29, 2026

• Product Highlights
• Snowmobile
• Testimonials
40,000-Mile Polaris Snowmobile
Tom Holzwarth accumulated more than 40,000 miles with no engine problems using AMSOIL INTERCEPTOR® Synthetic 2-Stroke Oil.
April 8, 2026

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A Decade of AMSOIL Ultimate Callout Challenge
March 31, 2026

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• Cars & Trucks
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Premium Valve-Body Protection
The valve body is the hydraulic control center of an automatic transmission.
March 5, 2026

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Daytona Bike Week is the First Sign of Spring
Daytona Bike Week kicks off riding and rally season with sun, fun and epic rides.
January 28, 2026

• News
• Diesel
• Marine
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Two-Stroke and Four-Stroke Engine Lubrication Differences
January 19, 2026

• How To
• Ask AMSOIL
• Diesel
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• Small Engines
• Dirt Bike
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• ATV/UTV
The 5 Approaches to Vehicle Maintenance: Which One Fits You?
Small additional efforts today can pay huge dividends down the road.
December 31, 2025