Car leaking oil everywhere

2006 BUICK RENDEZVOUS

215,000 MILES • 3.5L • V6 • 2WD

NICOLEATTEBERRY

MEMBER
1 POST

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!

Dec 29, 2025 at 4:59 AM

KRAKENAUTO

✓ASE Certified Mechanic
44 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.

Dec 29, 2025 at 11:47 AM

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