How Can This Be?
Thread Starter
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Amateur
Joined: Jan 2009
Posts: 45
Likes: 0
From: LongIsland
How Can This Be?
Changed oil on my 09 hemi.Took out Mobil 1 5w20+purolator pure 1 filter.Installed kendall GT-1+ purolator clasic filter.Oil pressure went from 58 psi cold to65 psi cold.Oil pressure stays 7lbs. more than it use to from dead cold to full operating temp. GT-1 is a full syn. oil,also 5w20. Pure 1 filter is 99.9% eficent. Classic filter is 97.5% eficent. What The Heck?
Thread Starter
|
Amateur
Joined: Jan 2009
Posts: 45
Likes: 0
From: LongIsland
How Can This Be?
Got back under truck today.Removed purolator classic filter,installed purolator pure one filter,added half quart 5w20oil. no more high oil pressure.Filter media on classic filter must be denser.