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by hinkley
1484 days ago
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That’s why those filters are full of zigzags. The CFM/m² is very small, and so it can capture small particles instead of them zipping through. Also takes longer for them to clog up. Way longer than the oil change place wants you to think. The test of a dirty filter is that it looks dark when backlit, not when it is covered with surface lint. When they show your your filter, take it out of their hands. |
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