I just installed a 4" mprb tubo back exhuast. took it for a test drive and it sounds great. got home backed into driveway and it made a little rattle so went under and found one of the hangers touching the frame so i turned it a little and fixed that problem. but noticed a small amount of oil leaking from the joint about where the cat would be.

Any ideas? or new turbo soon?

Also truck runs great noticeable improvment with free flowing exhaust.

 

I am willing to bet it is not engine oil but the gobs of strange lubricant and grease these pipes come coated inside from the factory, wait at least 500 miles and it should burn off. If it were turbo seals you usually get puffs of blue smoke taking off from a stop light after warmed up.

So I say your ok, I know cause I seen the same goo in mine prior to install. You will even see it puddling out the rear pipe if it makes it that far

 

Thanks man that was huge!!! I remember seeing the same goo inside the pipes and didn't even think of that. Thanks again.

 

Picture of turbo during install taken with cell phone.

on a side note dosn't the center bolt look funny?

 

Looks like a sliver is missing frm one of the flats.

 

I may be wrong but the bolts were or are cut or ground to balance the wheel . Mine looked kinda funny also when i had it out to clean it.