Antifreeze

30

Asked by Jan 28, 2015 at 04:02 PM about the 1998 Cadillac DeVille Sedan FWD

Question type: Maintenance & Repair

Putting green to top up instead of
recommendation of red
will this hurt motor

4 Answers

65,475

Your Cadillac probably has the red Dex-Cool in it. Top it off with a 50/50 mix of red Dex-Cool and distilled water or buy some that is premixed 50/50. Green can cause issues such as cooling system deposits and break down of the antifreeze.

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30

Thank you

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30

Do I have to drain completely and then put in fresh red mixed 50/50 with distilled water

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65,475

That is up for debate. It may depend on how much green stuff you put in. The Dex-Cool is good for 5 years so if the coolant hasn't been changed in a few years I would do a coolant flush and replace the antifreeze.

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