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?
I would immediately check the drain plug and filter to make sure they
are secure. If the oil change place left one of them loose it might be
ready to fall out completely and blow your engine. A leak of that
magnitude should be easy to spot and is likely to get worse fast.
Thanks. So I don't dare to use the car before taking it to dealer.
I can just look at the engine from top-front with hood open. can only see
the filter and the engine to its right side (covered by oil film). Seems the
leak starts from the filter or a close spot. Apparently much thicker oil
film on engine around the filter. I'd feel relaxed if it's not the gaskets
Simon, in your original post you said: "Now the oil stick level is a bit
lower, the coolant level is just right." This would suggest that the leak is
not major, considering you just finished up a 1500 mile trip. Oil leaks can
be deceptive and while you said there was "a big puddle of oil on the garage
floor right beneath the engine", I suspect that the oil probably dripped
down from the engine block and filter and spread out a bit, exagerrating the
size of the leak. It really sounds as if the filter was not properly
tightened. If the dealer who did the oil change is in your area, I'd simply
drive the car back to them and have them tighten the filter and top up your
oil (free of charge, of course!), so they know that they screwed up. If the
dealer isn't nearby, tighten it up yourself if you have the equipment and
top up your oil, failing which, just take it to the nearest garage and have
the filter tightened and the oil topped up.
Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here.
All logos and trade names are the property of their respective owners.