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Old 09-16-2015, 12:01 PM   #18
Bob86ZZ4
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Join Date: Feb 2009
Location: St. Paul, MN
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Hahahah, I was just going the flow of traffic.

That's normal oil pressure for Cats. Here's a snip from their web site:

What is normal oil pressure?
Typical oil pressure range for engines running at rated speed and operating temperature with SAE 10W-30 or 15w40 oil is:

C-10, C11, C-12 & C13: 30-45 psi


I'm guessing MB runs higher oil pressures? My son has a N-14 Cummins in his truck and his pressure is higher too. My truck had 52k miles on it when I bought it and that's where the oil pressure always read. I found it pretty hard to believe they would have damaged the engine in such a short time. I checked with the mechanic at the Kenworth shop I take it to and he said that's just the right pressure for that engine.
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'03 Freightliner FL112, 295" wheel base, with '03 United Specialties 26' living quarters, single screw, Cat C12 430 h/p 1650 torque, Eaton 10speed , 3.42 rear axle ratio
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