Is it ok to put any kind of stop leak in your car?

Quintonya Marshall

Asked by Jun 26, 2015 at 10:44 PM about the 2007 Buick Lucerne CXL V8

Question type: Maintenance & Repair

5 Answers


Stop leak is usually used as a last resort,and would help to know what for,coolant leak oil leak,tranny leak?

1 out of 1 people think this is helpful.

I guess you can but I would recommend ( Bars Radiator And Cooling System Stop Leak ) it has worked for me now for a year now. The secret is to not continue to add more if it does not work the first time hoping it will work that's when you can clog up your cooling system. If it does not work the leak is to big and needs to be repaired.

1 out of 1 people think this is helpful.
Best Answer

In your year of vehicle absolute not, that stuff is designed for big rigs that have very large cooling systems, if you put it in your car it can plug up very critical cooling passages inside the engine not to mention what it does to radiators and heater cores.

1 out of 1 people think this is helpful.
Bob Faulkner

^Simply not true. The second answer is the most complete and accurate.

Bob Beaman

Stop leak? What kind of leak are you stopping? Head gasket, cooling system, power steering, transmission, engine oil, air conditioning leaks? I would rather find the problem and do a proper repair. Stop leak products are a last resort repair only and I personally would avoid all of them.

1 out of 1 people think this is helpful.

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