I use to use Screamin Eagle syn 3 in the primary. I switched to Mobil 1 and now it's leaking from the bottom. Will a new gasket solve the problem or should I go back to the Screamin Eagle fluid?

 

Has nothing to do with the oil. Is it leaking from were you loosened something?

 

+1.....not to mention shouldn't you have changed the gasket when you changed the primary fluid anyway? gasket pinched?

 

I didn't take the primary cover off. I removed the derby cover and filled it through there. It is leaking form the bottom bolt on the big/main primary cover.

 

Might be a pinched O ring Tom. How much is leaking?

 

Its your Derby cover gasket, its not set in the grooves right therefore making it leak. Dunno why u filled it that way though, should have just unbolted the plug and then filled it through the inspection cover. Only had to take the Derby off if you were replacing the cover to a new one.

 

It's not leaking from the derby cover. It is leaking from the bottom bolt of the main primary cover

 

Ok then, scratch what I said, I misunderstood where it was leaking from the post up two from my reply.