Oil Leak Question
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Instructor
Joined: Nov 2007
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From: Peoria Arizona
Oil Leak Question
Posted this in General but here we go again. So about three weeks ago I was on a run when i grabbed second ( in an auto ) when I thought I got third. Hit the rev limitor and now I got some oil under my rear. Is it hopefuly some blow by out the vent or did I jack somethinething up? I know I need to get under it just want to know what to look for. Thanks bros for the feedback
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From: Cape Cod, Mass.
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My bet is that the leak is unrelated to the downshift and is the standard fare, leaky rear end that many of us have had to repair. If it's not making any unusual noises, I would wipe it down and see if you can isolate the source of the leak after your next drive. The usual suspect is the left side cover on the rear end.
Drifting
Joined: Jan 2008
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From: Florida
St. Jude Donor '09
So about three weeks ago I was on a run when i grabbed second ( in an auto ) when I thought I got third. Hit the rev limitor and now I got some oil under my rear.
CF Community Team
Joined: Oct 2004
Posts: 19,363
Likes: 5,243
From: Cape Cod, Mass.
2025 C6 of the Year Finalist - Unmodified
2025 C8 Z06/7/E-Ray of the Year Finalist - Unmodified
2023 C3 of the Year Finalist - Unmodified
2021 C8 of the Year Finalist Unmodified
2020 Corvette of the Year Finalist (performance mods)
2019 C1 of Year Winner (performance mods)
2017 Corvette of the Year Finalist
2016 C2 of Year
2015 C3 of Year Finalist
If you are usure of doing it yourself, make sure you find a COMPETENT mechanic that has succesfully performed this repair on C5's. There are many horror stories of 2 and 3 failed attempts by GM d ealership "mechanics".
Obviously you will have to determine if you even need the fix. The leaks are usually evident after sustained highway driving. You will see leaks down onto your exhaust and suspension on the left side, to the rear of the pumpkin. Good luck
Thread Starter
Instructor
Joined: Nov 2007
Posts: 148
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From: Peoria Arizona
Yea that is where it is leaking. Driver side got some on the exhaust and a little on suspension. Thought maybe the hard driving had something to do with it but I guess it just decided to leak. Definitely oil and not tranny fluid. And that is what I was afraid of having the dealer do the work. Better off doing it yourself. Thanks again for the good info.
Intermediate
Joined: Dec 2008
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From: scottsdale az
I had a small puddle under my diff a year ago-- checked the level a few times, never was low, I think the vent on the left side "vents" when driven hard. I'm not going to do anything about mine unless something else happens......
