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David Tracy
1/08/15 2:57pm

This article is spot on.

Cold oil = less oil flow. That's just a fact. Folks, don't rev your engine to the moon when your oil is thicker than maple syrup.

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    Jalop is Dead
    1/31/19 8:01am

    Wait wait wait.... I thought YOU were an engineer. Should you know that modern synthetic oil is THINNER at colder temps?

    5w-30 is a 5 weight oil in WINTER (W in 5W) and 30 weight oil while at operating temperature. Weight is a measure of viscosity, with water being 0w. Higher weight means high resistance to flow, or thicker.

    So warming you car up THICKENS the oil.

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Yes, Warm Your Damn Car Up If It's Cold