Oil Pressure Too High

[BigOrange]

Hey guys - I'm just wondering how high is too high on a GM 6.0 for engine oil pressure.  I had the truck down and out for a little while so I wasn't driving it regularly until recently - but I just don't seem to recall the oil pressure fluctuating quite as much as it does now in the past.  And maybe it's just because I've been driving it more and watching it a little more closely??? 

However, I'm typically I'm seeing around 280 KPA at a cold idle/start-up (~ 40 psi) which at a warm idle is down to about 210 KPA (~30psi).  At highway speeds warm I'm anywhere from 2200-2800 RPM I can see towards 400-410 KPA (~ 58-60 psi).  I've not seen it go above that though.  

Seem normal or is something seeming a little odd??

 

 

[diyer2]

Normal IMO.

 

[casey.mikl]

Yep normal. Warmed up mine is about 20-30 and will go up to 60 plus.


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[BigOrange]

 Thanks a lot fellas… I figured it was just since I haven’t been driving it for a while and now I’m only noticing it since my Ford work truck does not do the same type of fluctuation/variation from idle to higher RPM.  So it stood out.  I also did head gaskets so have been really paying close attention to everything more since

[casey.mikl]

The fords (atleast the old ones) had a sensor and were designed that if it hit a specific pressure it would show “normal” on the gauge and not fluctuate with rpm. Where the Chevy is a full gauge and not just an idiot light


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[Dnt]

My 2009 6.0 with 205k miles runs 60 to 65 at cold start and after warm up at idle runs 40 and around 45 to 50 on road at around 1500 rpm at higher rpms highway speeds above 2000 rpms I do see 55 to 60 so i do not think that is unusual at all. 

The GM 6.0 engine is basically bulletproof if serviced regularly, we have a lot of 3/4 ton pickups at work (seriously abused units) that have run over 400k miles with very little problems but they do keep the oil changed and that is the life of any engine. Once they get past 300k most will show a low oil pressure around 20 25 at hot idle.......... death is usually around 400k.   

Edited April 16, 2019 by Dnt
added info