Main Bearing Oil Seal Additives

Donny · Post by **Donny** » Thu Feb 11, 2016 1:32 pm

I have heard so many excellent reports on the additive AT-205 Re Seal product for stopping oil leaks on oil seals(rubber). However I am wondering if they work on the old style rope seal in the 318 Poly engines in our 59s etc. Don.

Dick Koch · Post by **Dick Koch** » Thu Feb 11, 2016 6:06 pm

Don - Most oil additives are formulated to swell rubber seals. Assuming rope seals are organic i.e. sisal or hemp I doubt an additive would have any effect. Try asking GOOGLE the guestion.
Dick

RICKYMOPAR · Post by **RICKYMOPAR** » Sat Feb 13, 2016 8:53 am

Replacing rear main seals on our favorite choice of vehicles is an easy endeavor. Changing from rope seal to two piece neoprene is okay also. KD Tools make a handy to use seal replacement set, well worth the money. I have no preference of type of seal and use both.

'59 Plymouth Forum