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Old 06-07-2018, 02:59 PM   #1
Jressman
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Default 93 240 Rear Main Seal oil additives?

I get about a quarter size oil drop from the trans passenger side bellhousing when the car sits overnight. Iím almost positive itís the rear main seal. Iím in the process of moving to a house with a garage later this summer where I plan on pulling the engine/trans and replacing the rear main seal and oil pan gaskets along with maybe a fresh head gasket. Iím wondering if a short term solution would be some oil additive to swell the rear main seal and slow or temporary stop the leak. I replaced my flame trap when the valve cover gasket leaked this winter, now itís leaking from between the engine/trans. Has anyone had any sort or luck with these seal conditioners?
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Old 06-07-2018, 03:17 PM   #2
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Are you sure it's coming from the rear main seal? It could be the cylinder head plug leaking and running down the engine. Suggest you make sure the breather box on the side of the block under the manifold is clear and make sure the drain hose under it is clear. Use a mirror to get a good look at the plug on the back of the head. You can also add uv dye and use the led pen and glasses to trace where it's coming from.
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Old 06-08-2018, 04:12 PM   #3
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Valve cover gasket can leak down to the same area.
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Old 06-08-2018, 05:47 PM   #4
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With a cold engine, run your fingers behind the back of the head and check for oil leaks. An inspection mirror and good flashlight helps a lot too.
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Old 06-08-2018, 05:50 PM   #5
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Quote:
Originally Posted by Jressman View Post
Has anyone had any sort or luck with these seal conditioners?
There is no magic in a bottle.
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Old 06-08-2018, 07:56 PM   #6
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There is no magic in a bottle.
Amen Reverend Be
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Old 06-09-2018, 12:56 AM   #7
90volvo
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When was the last time you cleaned your flame trap? Alot of people use Blue Devil but personally I would not put it in my engine.
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Old 06-10-2018, 11:18 PM   #8
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Quote:
Originally Posted by Jressman View Post
Has anyone had any sort or luck with these seal conditioners?
Try ATP 205 re-seal.
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Old 06-13-2018, 09:49 PM   #9
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Try ATP 205 re-seal.
this is what I have used and it did help
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Old 06-14-2018, 06:19 AM   #10
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Quote:
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There is no magic in a bottle.
Oh really?



Don't be too sure.
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Old 06-14-2018, 10:53 AM   #11
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this is what I have used and it did help
Me too.

Not a magic elixir but it could buy you some more time.
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Old Yesterday, 08:39 AM   #12
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meh not much will help.. i actually had a lumina that was leaking oil and the trans was slipping... i as a test dumped every bottle of hope in that just to see if anything helped stop and slow any of it.. the only product that made any difference what so ever was the Lucas trans stuff. it looks like 90 weight atf and the slipping stopped for a few months.... but nothing stopped any of the oil leaks
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