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  • Diesel Engine Oil Specifications: Making Sense of CK-4 & FA-4
    Industry NewsDiesel EventsDiesel

    Diesel Engine Oil Specifications: Making Sense of CK-4 & FA-4

    The API CK-4 and FA-4 diesel engine oil specifications are designed to help meet tight regulations while providing excellent wear...
  • A Beginner’s Guide to Motor Oil: What You Need to Know
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    ATV/UTVDieselMarineProduct HighlightsMotorcyclesSnowmobileAsk AMSOILSmall EnginesDirt BikeCars & Trucks

    A Beginner’s Guide to Motor Oil: What You Need to Know

    Motor oil seems simple. You pour it in your engine and drive away. But motor oil is far more complex...and...

    • What Does Oil Viscosity Mean

    Oil viscosity is the measure of its resistance to flow. How quickly or slowly motor oil flows affects how well it protects your engine.

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