Toggenburg
Full Member
- Joined
- Sep 26, 2021
- Messages
- 24
I have put 40K on my AV since I got it 2 years ago. Now has 223K.
I have found that my dash warning system displays a warning of severe engine damage if I keep running.
I had a former GM dealership (now operates as an independent with the same GM techs) do their thing on it.
They replaced the oil pressure switch and said the little screen/filter below it (just above the actual oil filter) was clean, and they did not replace that screen.
They put on the standard GM filter, and in about 100 miles of use, the oil pressure gauge would read about no higher than 10 to 15 psi.
I changed oil and replaced the oil filter with a PF63 one.
I had read that it has like a 22 psi valve on it vs whatever the 15 or so psi one GM says should be on my engine.
Immediately, with the PF63, my gauge reads 30 to 40 psi, and higher when the AFM kicks into 4 cylinders.
It's odd, I never see comments about similar issues and I don't recall where I first found out about the higher oil filter valve making the difference.
So, usually, I change the oil around 2000 miles (the dash indicates anywhere from 60 to 70 oil life remaining).
So, is my experience different from others here?
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Odd thing, my wife has a 2004 Suburban with an older 5.3L and 195K on it, the oil pressure (on the dash) always shoots up to 80 psi and stays there until key if off.
It should show higher pressure on any gauge as the rpms increase, and drop somewhat at idle...
I have found that my dash warning system displays a warning of severe engine damage if I keep running.
I had a former GM dealership (now operates as an independent with the same GM techs) do their thing on it.
They replaced the oil pressure switch and said the little screen/filter below it (just above the actual oil filter) was clean, and they did not replace that screen.
They put on the standard GM filter, and in about 100 miles of use, the oil pressure gauge would read about no higher than 10 to 15 psi.
I changed oil and replaced the oil filter with a PF63 one.
I had read that it has like a 22 psi valve on it vs whatever the 15 or so psi one GM says should be on my engine.
Immediately, with the PF63, my gauge reads 30 to 40 psi, and higher when the AFM kicks into 4 cylinders.
It's odd, I never see comments about similar issues and I don't recall where I first found out about the higher oil filter valve making the difference.
So, usually, I change the oil around 2000 miles (the dash indicates anywhere from 60 to 70 oil life remaining).
So, is my experience different from others here?
-
Odd thing, my wife has a 2004 Suburban with an older 5.3L and 195K on it, the oil pressure (on the dash) always shoots up to 80 psi and stays there until key if off.
It should show higher pressure on any gauge as the rpms increase, and drop somewhat at idle...