Question about 1984 Oldsmobile Cutlass

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Rear main is leaking oil and the transmission

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Might just be the gasket, shouldn't be to much to replace it if that's all that's wrong.

Posted on Sep 03, 2010

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Oil leak seem to come from starter. What can it be - main bearing oil seal?


Oil leaking around a starter is usually one of three possible things.
If it is motor oil, then suspect the rear main seal.
It it is auto trans fluid, it could be from the transmission front seal or the torque converter
If you have a manual transmission, it could be clutch fluid leaking from the slave cylinder, or a leaky front seal from the transmission.

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Try running some of that high-mileage engine oil next time you do an oil change (it helps to swell engine seals slightly). If the problem clears up or is reduced, then it's likely that the rear main oil seal is starting to leak a little. The rubber seals will harden up and shrink a little with age.
I would also powerwash the entire area clean, so that way any leak will be easier to monitor and pinpoint.

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Oil leak at rear of engine seems to run down between transmission and engine only when it is running


That's called a rear main seal. It seals the crankshaft exit point where it enters the torque converter / transmission. If your leak is here on the rear main, then you'll need to pull the ****** to change it out. If your leak is higher up, it may not be the rear main, it could be valve cover, if its lower than that, it could be the oil pan gasket. SInce it occurs only when running, it sounds like the rear main though. sorry. :(

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I have 1994 bluebird nissan altima with oil leak in transmission side.What posssible causes of it?


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My son has been doing something called doughnuts?in his car .so has split the main feeder pipe .i have changed that .but now there is fluid dripping from somewhere behind the engine could this be something...


dougnuts are never a good thing. the front seal on transmission could be leaking,if so the fluid will be red.it will drip down between the engine and transmission. if so, the transmission will need to come out fo r a replacement of front transmission seal. if it's clear fluid,it may be a bad steering rack. if it's black oil, it could be a bad rear main engine seal. if bad rear main seal,that transmission will need to come out for replacement of rear main engine seal.a abd rear main engine seal will also leak down between the engine and transmission and be black oil. check for color of the fluid leaking to give you a starting point to diagnose what to look for. thank you for choosing fixya.com

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First I'd find a different shop. $100 to look at it? I don't think so. Sounds like this may be a transmission issue.

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I am looking to buy a 1994 Toyota land cruiser. IT looks like there is a small oil leaks and a transmission fluid leak. The oil leak could be either an oil pan leak, rear seal, or valve covers. The...


Could be quite costly. Especially the rear main seal on the engine. You have to take the trans out to even get to it. I would look for something else with less problems to buy.

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Rear main seal leaks..does this affect transmission??


A leaking rear main seal will not cause your transmission to leak.

The transmission has its own seal and should not leak because of the engine rear main seal.

Due to the labor involved in replacing the rear main seal on the engine, it is best if you replace the front transmission seal at the same time if possible.

Installation varies on different vehicles but the principles are the same.

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Engine Rear Main Seal Leak


neither...rear main seal is broken do to the camshaft rubbing against it. Even fixing it with a new seal it will just leak again..best to just watch the oil lvl and add accordingly.

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There are only two paths for oil there. The rear main, and a oil galley plug a little higher up, about 2 o'clock.

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