If you could not find a Bosch or Mann oil filter...
#2
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I used a Fram
last time, same boat, couldn't find a Bosch or Mann anywhere and had to change the oil. The Fram was large, and did have the internal check valve, best I could tell. Motor hasn't blown up yet!
![EEK!](https://www.audiworld.com/forums/images/smilies/eek.gif)
#4
AudiWorld Senior Member
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What exactly is this internal check valve? I have heard quite a bit about it but never really understood it or read an explanation of what it is or does.
Thanks!
Thanks!
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