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      04-21-2024, 11:31 PM   #8
jonf49
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Drives: 2019 BMW M4 Competition
Join Date: May 2022
Location: 94063

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Quote:
Originally Posted by M3SQRD View Post
Apply oil to the outside and inside of the filter?!?! Hell NO! Only oil the entire outer surface of the filter area. What purpose would oiling the inside surface of the filter be? There’s no dirt on the inside area of the filter. You don’t want oil being sucked out of the filter and into the engine air inlet.
I can appreciate your point. The instruction manual states: “Allow oil to wick for approximately 20 minutes. Touch up any light areas on either side of the filter until there is a uniform red color on all areas.”

Kind of confusing, no?

When the new filter arrived it seemed oiled on both sides. Does the oil seep through to the other side from spraying the one intake side?
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