Should the oil filter be replaced every time when changing engine oil?

1 Answers
Bentley
07/29/25 6:02pm
When changing engine oil, the oil filter should be replaced every time. If only the engine oil is replaced without changing the oil filter, the new oil will flow into the old filter, causing the new oil to mix with the old oil, which affects the lubrication performance of the new oil. Information about oil filters is as follows: 1. Oil filters can be classified by structure into replaceable, spin-on, and centrifugal types; by system layout into full-flow and bypass types. The filtration materials used in oil filters include filter paper, felt, metal mesh, and non-woven fabric. 2. The function of the oil filter is to remove harmful impurities from the oil coming from the oil pan, providing clean oil to components such as the crankshaft, connecting rod, camshaft, turbocharger, and piston rings for lubrication, cooling, and cleaning purposes, thereby extending the service life of these components.
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