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2003 Cadillac DTS
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7 Posts
Discussion Starter #1
MY 2004 DEVILLE is losing antifreez, and I am putting more in tha car every 2 to 3 days. can anyone give me some advise as to what could cause this problem and how I could fixe the problem or where to start.
 

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1987 Brougham D'Elegance
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146 Posts
Re: 2004 Cadillac Deville, Losing antifreez

Check hoses and clamps, see if you can rent a pressure tester from autozone -- if not you can buy one pretty cheap online ~$50 from amazon and no adapter needed. You can also use UV dye to track the leak. I'm going through this myself and its so cold out i'm taking both approaches. Pumping the system up trying to find the leak in the dark (when i get home) or in the wind (on the weekends) is not easy, so UV dye could also be an aid. UV dye is on amazon too, that's like $4. Buy a UV flashlight and goggles too.
 

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White Diamond '03 DHS (with DTS floor shift)
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86,783 Posts
Re: 2004 Cadillac Deville, Losing antifreez

The surge tank and radiator side tanks are known to crack after years of heat/cool cycles and seep coolant. Look for the chalky white telltale residue of dried Dex-Cool.
 
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