Quote:
Originally Posted by demondrive
ha i feel like a jackass =) i didnt know all the oil filters had em, i assumed t hats why we had the rattle, was most people didnt have an anti drainback valve. oh well =)
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I wasn't under the impression that all filters had them either. I was just looking at
K&N's Website and found this on a oil filter diagram (pointing of course to an anti-drain back valve):
Anti-drainback valve (where applicable) eliminates dry starts, prevents oil from draining
I infer from the "where applicable" description that some filters (maybe those installed for a vertically, bottom-down installation) don't require an anti-drainback feature. Of course, anyone selling a filter for my truck should have the ADBV designed in since the installation is horizontal. But if it's a really cheap, poorly designed filter, who knows.
At any rate, I'm glad your rattle is gone and I hope the solution is permanant (or at least good for the next 300k).