2002 Chevy Venture Radiator Leak

CHEVROLET VENTURE
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THEAVNER
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  • 4 POSTS
I have a 2002 Chevy Venture minivan, 3.4 liter engine with 55,000 miles. I have a coolant leak in the lower right side of the radiator which I believe is coming from the gasket where the aluminum radiator tubes join with the plastic side. I thought about adding prestone super leak stop to close the leak but I did not know if this type of product will cause problems with my cooling system. Is is safe to add leak stop to the cooling system or will this create a new set of problems?

Thank you
Feb 1, 2007 at 11:37 AM
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SERVICE WRITER
  • ✓Experienced Mechanic
  • 9,123 POSTS
NNNOOOOOOOOOOO!!!!!!!


https://images.2carpros.com/forum/automotive_pictures/30961_scarry_1.jpg

Don't do it!!!!! Fix the leak. The problem with stop leak is isn't isn't too smart, it thinks any small passege inside the motor or t-stat or radiator or heater core is a leak and lugs that up too.
Feb 1, 2007 at 9:50 PM

Suggested Repair

Do not add Prestone Super Leak Stop. Repair the radiator leak properly so stop-leak does not clog small passages in the engine, thermostat, radiator, or heater core.

Conversation Summary

The owner of a 2002 Chevy Venture with a 3.4L engine asked whether Prestone Super Leak Stop is safe for a coolant leak at the lower right radiator, where aluminum tubes meet the plastic tank. The expert strongly advised against stop-leak and said to fix the leak, because the product can clog small passages in the engine, thermostat, radiator, and heater core.

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