2005 GTO LS2 Engine Oil Pressure - PY Online Forums

Sirrotica · #1 01-30-2014, 09:33 PM

Rule of thumb is minimum of 10 lbs of oil pressure per 1000 RPM and you should be fine since yours is twice that. 10W-40 should not cause you any problems.

Back 40 + years ago straight 40W was what was used in many high performance engines and it's much thicker than 10W-40 is. Not something you want to run under 40 degrees ambient though.

The owner of PY wants to welcome all Pontiacs to this site, so welcome and if I can help you with any questions I'd be happy to.

HATRK · #2 01-31-2014, 08:45 AM

Thanks for taking time to respond to my question. I just want to make sure that when I get into the higher rpm ranges (4k to 6k) the heavier oil won't create too much internal pressure on gaskets, etc.

eric_cspan · #3 02-03-2014, 04:17 PM

Quote:

Originally Posted by HATRK

Thanks for taking time to respond to my question. I just want to make sure that when I get into the higher rpm ranges (4k to 6k) the heavier oil won't create too much internal pressure on gaskets, etc.

Feel free to post in the 04-06 GTO tech section. Some guys aren't as welcoming to the late models but we have a good gathering here where you won't be ridiculed or laughed at.