Another oil pressure question!!
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Joined: Aug 2006
Posts: 59
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From: Miami florida
Another oil pressure question!!
Hi folks , my 1990 L98 reads 40 psi when cold at idle, 10-15 psi hot at idle, about 30-40 while driving using 5w-30 dyno oil...I live in s.Florida. Is this normal?
I can hear the valvetrain but for some reason all the c4's I've heard seem about the same. Kinda noisy. BTW would you switch to Synthetic 10-30?? Thanks
I can hear the valvetrain but for some reason all the c4's I've heard seem about the same. Kinda noisy. BTW would you switch to Synthetic 10-30?? Thanks
Safety Car
Joined: Oct 2004
Posts: 3,830
Likes: 3
From: Granada Hills CA
'89 stock L-98
PSI @ idle warm-29
PSI @ 70 mph cruise- 54
PSI @ idle cold- 48-52
Castrol GTX Hi mileage 10-40W
170,000 miles
Don't know if this helps, just my observed readings.
-BTW I don't hear any valve train noise.
PSI @ idle warm-29
PSI @ 70 mph cruise- 54
PSI @ idle cold- 48-52
Castrol GTX Hi mileage 10-40W
170,000 miles
Don't know if this helps, just my observed readings.
-BTW I don't hear any valve train noise.
Corvette Enthusiast
Joined: Oct 2007
Posts: 6,795
Likes: 2,717
From: So. Cal.
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oil pressure
I think as long as its running good with those pressures you will be ok. Maybe take your valve covers off and ajust lifters and check for oil at the rockers. I have had early SBC's that ran fine with low oil pressure. At this point I would stick with the dino.
