Its primary function is to create a tight, reliable seal between the oil drain plug and the mating surface of the oil pan. It is typically thicker in the center and thinner at the edges.
Reusable Vs Disposable Washers: Understanding the Differences
Unlike a standard gasket, which is often a flat ring of rubber or cork, a crush washer is designed to be slightly deformed during installation. Guessing the tightness by "feel" is a recipe for disaster.
If the drain plug is not started correctly on the stud, the resulting friction can generate immense heat. This heat can melt or burn a copper washer, causing it to stick to the oil pan or the plug.
Reusable Vs Disposable Washers: Understanding the Differences
A small drip might seem harmless, but it leads to a loss of oil, which directly threatens engine lubrication and longevity. First, always inspect the drain plug and the washer well.
More About Oil drain plug crush washer
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