rear main seal

[mattpiotr]

im pretty sure the rear main seal is leaking on my 86 gmc 2500. its leaking around the bell housing but then again its also leaking of the front diff. so its got me thinking its either the rear main seal or oil pan gasket i plan on changing the oil pan gasket on the next oil change since its easy but just wanted to know if it is the rear main seal if anybody has used the rear main seal stop leak and did it work at all?

[INSIDIOUS '86]

Stop leak products turn all ALL your engine seals to mush they are a temporary fix and great to run for a weak to sell to the dealer
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[mongoose]

its a once piece seal... I'd just change it out... way easier than a 2 piece.. just need to unblolt the trans.

[INSIDIOUS '86]

Originally Posted by mongoose

its a once piece seal... I'd just change it out... way easier than a 2 piece.. just need to unblolt the trans.

it may or may not be, I belive in late 85 they transitioned to one piece for passenger vehicles and it was later for trucks at either rate he still has to drop the pan to unbolt it

[rs72z]

I was thinking that all the trucks went to one piece in 86?

[motornut]

thought the dipstick drivers side was 2
pass side was one

[mongoose]

Originally Posted by INSIDIOUS '86

it may or may not be, I belive in late 85 they transitioned to one piece for passenger vehicles and it was later for trucks at either rate he still has to drop the pan to unbolt it

I know the cams stayed untill later but the seals changed too.. So centre bolt heads probably a 1 piece seal..

Should be able to be slipped out like a balancer seal or rotor seal etc. Though I could be wrong.. Drawing a blank honestly how it sits in the aluminum piece.. Even though I've torn down hundreds lol.. Kinda sad
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[mattpiotr]

the dip stick is on the passanger side....or what about that lucas oil oil stablizar?