simonswu

2001 Impala base 3.4L. 45K.

A couple of days after a trip of about 1500 miles, I just saw a big puddle of oil on the garage floor right beneath the engine. (I'm sure it's some kind of oil, not coolant). Before the trip, it had an oil/filter change and 15-point inspection, everything was fine. Now the oil stick level is a bit lower, the coolant level is just right.

The car got a coolant leak 8 months ago, leaking from both head gaskets, according to dealer. The dealer replaced the gaskets, and changed engine oil as they mentioned the oil got contaminated by coolant. That time I learnt there is a notorious problem with GM gaskets.

Could the leak this time related to the previous one?

bigrod118

well it's possible, its the one thing I don't like about going somewhere to get my car fixed. when you take some parts off of a car and put them at torque, after a little time, you need to go back and re-torque them down, even wheels. intake, exhaust when you replace them or put new ones on, after they heat up and cool down a couple of times, you need to go back to re-tighten them since that moves the bolts, but when you go somewhere to have something fixed, no one ever tells you that little but very important fact. so there is a good chance that the previous leak has something to do with this one. but then again I could be wrong and they could have nothing to do with each other.

bermis519

Here is something to check, i have my oil changed once and the put the wrong oil filter on it. With the wrong filter, oil went everywhere. This is just a good thing to check also. Try to find where it's leaking.

Mike

johnholl

check the drain plug, and if you can, remove the filter to varify that the old filter gasket was removed by the oil change place before they screwed the new filter on