Join Date: Nov 2010
Location: West Jefferson, Ohio
It will greatly depend on what motor you have. If it's the 3400, I call BS as they RARELY ever leak from the oil pan. Other causes could maybe be the intake manifold or possible a valve cover gasket. If it's the 3800, then yes, it could very well be the pan gasket.
3800 isn't too hard to change the gasket, IIRC. 3400 pan gasket really can't be done without pulling the motor or tranny. It is a cast aluminum pan with cross bolts for the main bearing caps. But like I said, they basically never leak there.
'69 Impala 4-door hardtop
'70 Impala Custom coupe