oil out of back of engine onto hot pipes why from where
1990 corvette oil on trsns behind top of motor running down on to hot pipes ,from where ,why also clunk when given gas, trans or u joint ?
Sounds like either a rear main seal, external head gasket leak, or valve cover gaskets causing the oil on your exhaust pipes. The thunk on acceleration is probably U-joints since the Corvette is rear-wheel drive. Have the U-joints checked for play before suspecting the transmission.
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