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Mike S.
Mike S., ASE Certified Technician
Category: Cadillac
Satisfied Customers: 7155
Experience:  ASE certified
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Cadillac STS: antifreeze leak 1992 cadillac sts not coming

Customer Question

antifreeze leak 1992 cadillac sts not coming from radiator. seems to be coming from the top or mid engine from a tube drivers side close to tire.
Submitted: 1 year ago.
Category: Cadillac
Expert:  Mike S. replied 1 year ago.
The best way to find the leak is to rent or borrow a cooling system pressure tester and pump the cooling system up to whatever the cap is rated at, usually about 15 psi or so and then look for the leak. The leak will be much easier to see with pressure on the cooling system.
Just wsh off any previous coolant and make sure the radiator is full before hooking up the tester.
I believe autozone will allow you to borrow their tester for free.