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Eric
Eric, Automotive Repair Shop Manager
Category: Cadillac
Satisfied Customers: 24298
Experience:  20+ yrs. experience as repair shop manager and technician.
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leaking heater core will Bars stop leak fix this problem. Bad

Resolved Question:

leaking heater core will Bars stop leak fix this problem. Bad fumes in car
Submitted: 3 years ago.
Category: Cadillac
Expert:  Eric replied 3 years ago.
Hi,

while it might temporarily stop a small leak in the heater core, it will not stop a large leak. In addition, if you are planning to keep the car for awhile, I wouldnt use it. It can and usually does, clog the radiator, water pump or thermostat, and in worst case, clog up one of the water jackets in the engine block - all of which will add to the repair bill once you decide to have it properly repaired. I have seen too much damage done to cooling systems and the engine from the use of Bars or any other brand of stop leak to every endorse its use.

Best I can tell you is use it at your own peril, understanding ahead of time the damage you will likely do to your cooling system and engine.
Customer: replied 3 years ago.
Any other suggestions
Expert:  Eric replied 3 years ago.
Hi,

with a leaking heater core, you have 3 options:

  • replace the heater core
  • bypass the heater core but lose heat for cabin of car
  • use a stop leak product and deal with the additional repairs needed due to its use
Those are your only options. the best would be to replace the heater core.
Eric, Automotive Repair Shop Manager
Category: Cadillac
Satisfied Customers: 24298
Experience: 20+ yrs. experience as repair shop manager and technician.
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