"easy enough to change but I think I got a defective filter. I think the anti drain back valve was faulty on this one. every time I started up my truck it would take 2 to 3 seconds to build oil pressure. when up to temp oil pressure was in the 60 to 70psi range at about 1600rpms. cold start ups it would sit close to 90 psi. added the extra quart as suggested for the larger filter, also removed about a quart as well and still got the same results."
Cummins
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