Bit Of An Oily Problem

[Mr_G]

Hey guys,

Having abit of an oily situation at the moment. It seems where the gearbox connects to the motor, there is an aparant small leak of oil, which ive just recently noticed. It also appears to be motor oil, rather than gearbox oil.

Oil levels in the car are fine, however ive been told this could be the rear main seals. Which im not too sure what is meant by this. Excuse my ignorance.

If so, is it an expensive job to fix up? How much longer should I be driving like this?

Any help would be appreciated. Car is a S15 with sr20det

Thanks

Edited September 18, 2006 by Mr_G

[SECURITY]

it more than likely is your rear main seal.

check if you're leaking from the back of the head too. your half moons or rocker seals could be worn too.

to get to your rear main seal you'll need to take your gearbox off.

the rear main seal sits in the rear main seal housing, not all cars have this housing but this is how it was on my car (rb25det).

i had to undo bolts off the sump then some 10mm bolts holding the housing in. you wont need to undo your sump completley, those four or so bolts should do.

make sure you use some gasket maker like ultra blue or ultra black when putting the new main seal in, one of them is the higher oil resistant one, so use that. use some more on the bottom of the housing to seal it between the sump.

the main seal cost me around $20 with the sau discount from nissan.

[mad082]

i have oil in the same spot, but it is coming from the cam cover.

[Cubes]

Mine looked exactly the same... Gear front input shaft seal.

Gearbox oil motor oil looks feels pretty much the same.

[13thracer]

will most likely be the rocker cover gaskets at the back leaking and dripping down. best way to go about things to be sure is clean it all down with degreaser and and then check it daily to find the fresh leak then you will be able to tell were exactly its coming from.

[HRthirtyone]

  13thracer said:

will most likely be the rocker cover gaskets at the back leaking and dripping down. best way to go about things to be sure is clean it all down with degreaser and and then check it daily to find the fresh leak then you will be able to tell were exactly its coming from.

ditto, they can be sneaky

[Mike_]

Mine looks the same and I've got a rocker cover gasket leak, just drips down in a scary spot is all hehe

worth doing as the others said and cleaning it, checking for fresh oil, but do it soon because if it IS a main rear seal you dont really wanna drive on it and risk doing your clutch in.

[Cubes]

So it appears it can be one of three things.

1. Rocker covers.

2. Gearbox input shaft seal.

3. Engine rear main seal.

[Mr_G]

Thanks for your help guys, ill be getting this problem sorted next week!