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Just purchased a 2004 Chevy Duramax 3500 LLY and traded a 2002 Duramax 2500. My question is that the oil pressure for the new engine is 20-30 psi idling and 55-65 psi running. My old Duramax LB7 ran at 40 psi idling and 80 psi running. Is this a problem? Could the indicator be bad or are the new engines normally carrying lower oil pressures?
 

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Well I'm not one of the techs, but those numbers reflect what mine are...


From my experience with other types of engines, I don't see a problem with those numbers. In fact, I think they're actually better especially for those of us who live in areas where it gets cold in the Winter and the oil gets thick...



I couldn't say if it's a problem since I figured it was normal. We'll see what the guru's say.
 

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My LBY runs inexcess of 100psi cold 80 hot on real guage factory never goes over 60, Steeler says normal?
 
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