I have a 2001 Deville DTS 26,000 on a rebuilt engine. Low oil pressure light comes
on after engine is warm at idle. I had a shop test the pressure with a mechanical oil
pressure gauge and has less than 10psi at warm idle. Engine oil pressure increases
to normal when engine RPMs are raised. They believe it to be worn internal engine
components like oil pump or excessive engine bearing clearances, and recommend
changing oil with a higher viscosity and possibly adding a supplement. I will change
the oil, but are there any suggestions to what may be the cause other than what
they believe to be the problem.
Thank you
on after engine is warm at idle. I had a shop test the pressure with a mechanical oil
pressure gauge and has less than 10psi at warm idle. Engine oil pressure increases
to normal when engine RPMs are raised. They believe it to be worn internal engine
components like oil pump or excessive engine bearing clearances, and recommend
changing oil with a higher viscosity and possibly adding a supplement. I will change
the oil, but are there any suggestions to what may be the cause other than what
they believe to be the problem.
Thank you