L98 Oil Cooler O-ring
Thread Starter
Instructor
Joined: Mar 2008
Posts: 148
Likes: 0
From: Rindge NH
L98 Oil Cooler O-ring
I've read a few places on the 'net claiming the o-ring between the block and oil cooler is essentially the same as the o-ring on an oil filter.
I have a lot of oil leaking from the engine's left side onto the exhaust. Previously replaced the oil pressure sensor. I've read about the tendency for the china wall to leak. It does look like I have a leak there, but the engine's left side is very wet, much more than the right side and all around the cooler and temp sensor.
Today I replaced the oil temperature sensor using thread sealant and am in the process of replacing the oil cooler o-ring.
Trying to use an o-ring from a new oil filter, which does fit the housing groove. Reinstalling the cooler, I can not feel the oil cooler engage the studs that keep it from rotating. It seems the oil filter o-ring is taller than the o-ring I removed from the cooler. I don't place much value in using the old o-ring as a sample. The original o-ring sits flush with the top of the housing groove, it seems the oil cooler may be "bottoming" out against the block, probably leaking.
Does anyone have any real world experience using an oil filter o-ring in this application and whether it does indeed work? Do I need to bite the bullet and go to the GM part?
Thanks for reading!
Jeff
I have a lot of oil leaking from the engine's left side onto the exhaust. Previously replaced the oil pressure sensor. I've read about the tendency for the china wall to leak. It does look like I have a leak there, but the engine's left side is very wet, much more than the right side and all around the cooler and temp sensor.
Today I replaced the oil temperature sensor using thread sealant and am in the process of replacing the oil cooler o-ring.
Trying to use an o-ring from a new oil filter, which does fit the housing groove. Reinstalling the cooler, I can not feel the oil cooler engage the studs that keep it from rotating. It seems the oil filter o-ring is taller than the o-ring I removed from the cooler. I don't place much value in using the old o-ring as a sample. The original o-ring sits flush with the top of the housing groove, it seems the oil cooler may be "bottoming" out against the block, probably leaking.
Does anyone have any real world experience using an oil filter o-ring in this application and whether it does indeed work? Do I need to bite the bullet and go to the GM part?
Thanks for reading!
Jeff
Team Owner
Joined: Jul 2004
Posts: 28,485
Likes: 3,291
From: Hartford WI
I got the O-ring off an AC Delco filter that I had lying around waiting for the oil change but that was in a pinch. I had a leak later so I went to GM and got the right gasket. That was about a year ago so.....
What is the reason you don't want to get it from GM? It wasn't expensive
What is the reason you don't want to get it from GM? It wasn't expensive
Oil Producer
Joined: Apr 2014
Posts: 9,378
Likes: 2,739
I got the O-ring off an AC Delco filter that I had lying around waiting for the oil change but that was in a pinch. I had a leak later so I went to GM and got the right gasket. That was about a year ago so.....
What is the reason you don't want to get it from GM? It wasn't expensive
What is the reason you don't want to get it from GM? It wasn't expensive
Thread Starter
Instructor
Joined: Mar 2008
Posts: 148
Likes: 0
From: Rindge NH
Thanks for the reply!
I already had an oil filter in the garage...only reason I haven't gone to GM. If the free o-ring works
Going rate for the GM part is $21.50; in the end sounds like money well spent. I'm guessing no leak since you installed the GM part?
I already had an oil filter in the garage...only reason I haven't gone to GM. If the free o-ring works
Going rate for the GM part is $21.50; in the end sounds like money well spent. I'm guessing no leak since you installed the GM part?
Team Owner
Joined: Jul 2004
Posts: 28,485
Likes: 3,291
From: Hartford WI
Why don't we try this. Reinstall the original O-ring and see whether it fits or not. Then use the oil filter ring and see what gives. It could be something stuck in there or someone put in a 2nd O-ring by mistake.
Burning Brakes
Joined: Sep 2002
Posts: 1,012
Likes: 62
From: Houston Tx
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Every 2027 Corvette Engine Explained
Joe Kucinski
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Verdad Gallardo
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski