Porous aluminum oil pan?
I took my 2004 Rendezvous to the dealer today for the very pricey 90,000 mile recommended maintenance. I asked them to check for an oil leak since I have been seeing drops on the garage floor since my last oil change a few weeks ago. I suspected maybe something loose. Imagine my surprise when they said oil was leaking through the pan due to porous aluminum. Imagine my bigger surprise (shock) when they said it would cost $814 to change the pan. The service advisor said he has seen a number of cases of this and heard Cadillac has the same problem. Has anyone heard of this? And why, if there is this problem with a 6-yr old car, has Buick not done something about it? A recall? A tech bulletin? Something? This is obviously a materials problem, or else totally bogus. Funny to me it started leaking right after an oil change. So they want $814 to put on another aluminum pan that might get the same problem? Surely if this is a common thing, someone will know about it. Thanks for any help.