Car leaking oil everywhere

NICOLEATTEBERRY

MEMBER
2006 BUICK RENDEZVOUS
3.5L
V6
2WD
215,000 MILES

I have a oil leak. And I can't tell where it's coming from. Also my overflow tank is bubbling but the car isn't over heating? And helpful things I can do? Also my entire engine moves when I put it into reverse, like it jumps almost. Not sure if it's the engine or transmission mount but I've replaced them both!

Monday, December 29th, 2025 AT 4:59 AM

1 Reply

KRAKENAUTO

MECHANIC
82 POSTS

Ok let's address these issues separately as they are not related.

1. Oil leak, there is a dye at the parts store you can add to your oil, it is a UV based dye you can see using a UV light.

2. Overflow tank bubbling, There could be air in the cooling system if it was recently serviced and not properly bled. But usually this indicates a blown head gasket many times as exhaust gas can enter into the cooling system causing the bubbling.

3. The engine moving when put into gear likely is a bad engine mount or mounts. You should be able to look while someone is putting it back and forth into gear and look to see which mount/mounts have bad bushings.

Was this

answer

helpful?

Yes

No

Monday, December 29th, 2025 AT 11:47 AM