Fixed my cold start rattle!!

[jerryp58]

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 =)

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).

[elementalJ]

I took mine to the stealer today. They kept her, and gave me some rental crap..
Im sure they will tell me that its normal. And then Im going to ask which showroom window they would like me to park it in...

[Hertz]

i have a cold start rattle. and i have a kn filter and use gtx high mileage.