Question about 1991 Buick Park Avenue

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Low Coolant Light

The low coolant light came on in my 1991 buick park av..do I need to drain the old coolant and put a specific kind back in? I heard that using the cheap mix of coolant (pre mixed half water half coolant) may not be good to get..

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  • farmbank Sep 13, 2009

    No its not leaking but it was very low when I checked it

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Why is it low? Leaking? The dumbest thing they sell is a 50/50 mix of antifreeze. You are getting 50% water and 50% coolant. Just buy a 100% antifreeze jug add it first and top it off with water. If the water is not low you may hve a bad coolant level sensor. It snaps into the radiator tank and is easy to replace when cold.

Posted on Sep 13, 2009

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Buick, GM, uses Dexcool in these vehicles. Dexcool is know for melting your intake gaskets Thus allowing coolant into your intake which will in short ruin your engine. If you don't knwo where your fluid is goint ie a visible leak, I would do as follows...Before you put more fluid in your tank, I would pull a spark plug or two to see if you have fluid going into your cylinders. This is easily seen as a black sludge on the plug electrode. If there is no fluid, I would have the coolant system flushed with plenty of water then add conventional/standard antifreeze. If you dont fully flush your entire coolant system, the conventional Anti freeze will not mix with Dexcool and it will foam causing more problems. Stay away form Dexcool. Standare Antifreeze will nto hurt your engine. There is a class action Lawsuit against GM that has been settled for These Car owners. Google it and you my be eligible for repair & costs reimbursed by GM. Dexcool is a GM manufactured product that is just a 100,000 mile antifreeze. They have known about the problems with
Dexcool for years, however will assume no responsibility for the damage it is causing.
Hope this helps. Dan
A regular guy with the same problem

Posted on Oct 01, 2009

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