Oil leak?
Thread Starter
Race Director
Joined: May 2003
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Oil leak?
My car is leaking a slight bit of oil. Nothing to be a great concern, but I would like to fix the problem. Where do the L-98s typically tend to leak? The car has 72000 miles on it. I took a look the other day, and I didnt see much. This might have to do with the -3 weather conditions in the winter. But it was leaking when I put the car away for the snooze.
Burning Brakes
Joined: Jan 2005
Posts: 804
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From: The land of 10,000 lakes ,Minnesota 89 coupe 6speed with 383 and 89 roadster 6speed bonestock with XXX low miles
Do you use synthetic oil?
and the L98s are known for leaking oil around the intake manifold my coupe does not I just rebuilt it but the roadster has a small oil leak it seems to be comming from that area but it had synthetic oil in it so I drained it and put regular 10-30W in just before I put the car away for the winter so I have my fingers crossed that does it or I will be pulling the intake manifold and resealing it
and the L98s are known for leaking oil around the intake manifold my coupe does not I just rebuilt it but the roadster has a small oil leak it seems to be comming from that area but it had synthetic oil in it so I drained it and put regular 10-30W in just before I put the car away for the winter so I have my fingers crossed that does it or I will be pulling the intake manifold and resealing it
Team Owner
Joined: Dec 2000
Posts: 90,675
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From: SE NY
Cruise-In II Veteran
First off make sure it's motor oil; if so:
-Front/rear of intake base & intake base bolts
-oil filter, oil pan
-rear seal
-valve cover gaskets
-oil pressure sensors on the stalk behind intake base
-oil temp. sensor near oil filter
-Front/rear of intake base & intake base bolts
-oil filter, oil pan
-rear seal
-valve cover gaskets
-oil pressure sensors on the stalk behind intake base
-oil temp. sensor near oil filter
Thread Starter
Race Director
Joined: May 2003
Posts: 10,749
Likes: 41
Originally Posted by 89sleeper
Do you use synthetic oil?
and the L98s are known for leaking oil around the intake manifold my coupe does not I just rebuilt it but the roadster has a small oil leak it seems to be comming from that area but it had synthetic oil in it so I drained it and put regular 10-30W in just before I put the car away for the winter so I have my fingers crossed that does it or I will be pulling the intake manifold and resealing it
and the L98s are known for leaking oil around the intake manifold my coupe does not I just rebuilt it but the roadster has a small oil leak it seems to be comming from that area but it had synthetic oil in it so I drained it and put regular 10-30W in just before I put the car away for the winter so I have my fingers crossed that does it or I will be pulling the intake manifold and resealing it
I do use synthetic oil. Do you think changing to conventional will really help?
Burning Brakes
Joined: Jan 2005
Posts: 804
Likes: 1
From: The land of 10,000 lakes ,Minnesota 89 coupe 6speed with 383 and 89 roadster 6speed bonestock with XXX low miles
Originally Posted by 88BlackZ-51
I do use synthetic oil. Do you think changing to conventional will really help?
So I am hoping my roadster does the same
I have been told synthetic oil is thinner than regular oil and it finds its way around and through cork gaskets
I run synthetic in my coupe and I have no problems with leaks but it has mostly all rubber gaskets
Advanced
Joined: Jan 2003
Posts: 56
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From: Powell TN
That is a complete myth about synthetic oil. I run synthetic in all of my cars. 96 Vette, 68 GTO, 70 GTO, etc, and synthetics do not cause leaks nor do they seem to seep through gaskets. I would not change from synthetic back to dino oil, there are too many positives for using synthetic.
Burning Brakes
Joined: Jan 2005
Posts: 804
Likes: 1
From: The land of 10,000 lakes ,Minnesota 89 coupe 6speed with 383 and 89 roadster 6speed bonestock with XXX low miles
Originally Posted by TNVette
That is a complete myth about synthetic oil. I run synthetic in all of my cars. 96 Vette, 68 GTO, 70 GTO, etc, and synthetics do not cause leaks nor do they seem to seep through gaskets. I would not change from synthetic back to dino oil, there are too many positives for using synthetic.
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Le Mans Master
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From: The Motor City
Originally Posted by 65Z01
First off make sure it's motor oil; if so:
-Front/rear of intake base & intake base bolts
-oil filter, oil pan
-rear seal
-valve cover gaskets
-oil pressure sensors on the stalk behind intake base
-oil temp. sensor near oil filter
-Front/rear of intake base & intake base bolts
-oil filter, oil pan
-rear seal
-valve cover gaskets
-oil pressure sensors on the stalk behind intake base
-oil temp. sensor near oil filter
If everything is sealed correctly and you use good silicones/gaskets (right stuff etc.) I don't beleive in the synthetic oil as causes for leaks. MO
Last edited by mseven; May 2, 2006 at 07:44 AM.
-oil pressure sensors on the stalk behind intake base
Team Owner
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From: Fort Knox, KY
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Do you have oil on the lower front cross member, too? If so, it could be your PS pump or hoses leaking. That's common, too.