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Registered User
Join Date: Jun 2011
Posts: 6
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annoying oil leak
I have a really annoying oil leak which is no more than a very small oil loss it looks as though it is coming from the bottom mounting bolts of the integral oil cooler there is no oil coming from above that point to check it out means partially dropping the the engine to gain access but i have a plan B which really is my reason for posting .I obtained some Hi-Gear leaks no more which states it will cure oil leaks in approx 300 miles its made in the USA so thought someone on here may no more about it.Any views on whether this may be a short cut to my problem would be appreciated
Bob |
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12-30-2011, 03:51 AM
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Registered
Join Date: Oct 2008
Location: Nash County, NC.
Posts: 8,471
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Youre more than likely leaking in the triangle of leaks, thermostat, idiot light switch and breather cover.
The oil cooler gaskets are tough and longer than the area they fit in so theyre crushed in place. The top oil cooler gaskets are under pressure but the bottom one is under gravity flow and suction from the oil pressure pump, so I dont see a leak on the bottom. Now, you could have a leaking oil cooler. Bruce |
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12-30-2011, 04:00 AM
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Join Date: Aug 2003
Location: RI
Posts: 900
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You could take the fan assembly out and look in on top of the engine in the back. then you would know that it is coming from above. You could also do a partial engine drop to fix the problem.
I would not use any additive to stop an oil leak. Lots of tiny oil passages in these engines. You wouldn't want your cam spray bars to stop "leaking " 
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Silver 1980SC Euro coupe |
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12-30-2011, 04:13 AM
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Join Date: Jun 2011
Posts: 6
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thanks for the reply bruce i have really cleaned the area of the leak gone out for a run and the oil leak is always in the same place right on that cooler connection i have a well lit pit so i can really look around and i cannot see any oil coming from anywhere else do you know anything about Hi-Gear leak addative?
Bob |
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12-30-2011, 04:19 AM
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I wouldn't use the additive.
If you're sure the leak isn't coming from above, remove and pressure test the oil cooler.
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Pete 79 911SC RoW "Tornadoes come out of frikkin nowhere. One minute everything is all sunshine and puppies the next thing you know you've got flying cows".- Stomachmonkey |
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12-30-2011, 04:46 AM
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Join Date: Apr 2010
Location: New Orleans, LA
Posts: 1,493
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the oil cooler has 3 o rings which can be a source of leaks. I will add to the chorus telling you not to use any kind of stop leak. It may stop the leak, and it may also stop oil from flowing to critical areas.
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1982 911SC, Mocal oil cooler, Bilsteins, Carrera tensioners, backdated heat, factory short shift, Seine gate shift, turbo tie rods, pop off. 2005 Mercedes-Benz C230 kompressor sport 6-speed (daily driver) |
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12-30-2011, 05:22 AM
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Registered User
Join Date: Jun 2011
Posts: 6
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Thanks for the advice no shortcuts then so i will have to partially drop the engine and do it propererly
Bob |
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12-30-2011, 06:14 AM
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There is one area behind the oil cooler that can cause a leak. I used JB Weld here.
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Ed 1973.5 T |
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12-30-2011, 06:37 AM
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1979 Porsche 911SC
The Other Woman
