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  • What Motor Oil is Right for Your Boat or Personal Watercraft Engine?
    How To
    Marine

    What Motor Oil is Right for Your Boat or Personal Watercraft Engine?

    Dedicated marine motor oil is vital to marine engine protection.
  • What Causes Motor Oil Contamination?
    How ToNews
    Ask AMSOILCars & Trucks

    What Causes Motor Oil Contamination?

    Motor oil contamination is the result of chemical changes to the oil, in addition to the accumulation of dirt, fuel,...
  • What is Fuel Dilution (and Why is it Bad)?
    NewsHow To
    DieselAsk AMSOILCars & Trucks

    What is Fuel Dilution (and Why is it Bad)?

    Fuel dilution occurs when gas or diesel infiltrates the crankcase and contaminates the motor oil. Here's why it's bad 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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