Automobiles

What The HD In Engine Oil Means (And Why You Shouldn't Ignore It)

High Detergent? High Definition? Howdy Doody? Just what, exactly, does it mean when the label on your vehicle's motor oil uses the initials HD?

SlashGear Auto

published: Mar 03, 2025

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High Detergent? High Definition? Howdy Doody? Just what, exactly, does it mean when the label on your vehicle's motor oil uses the initials HD?

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Technology
Cars

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