I've developed an oil leak on the 'tour (86k miles) which I believe is more than likely the oil pan gasket. Dropping the y-pipe today resulted in four broken bolts
- two on the y-pipe to cat flange and two on the y-pipe to rear bank manifold flange. My question(s): are the studs on the rear bank exhaust manifold flange (manifold to y-pipe connection) pressed or threaded into the flange? Are replacements available at the dealer or should I scrounge the muffler shops? Advance thanks for any words of wisdom!
