coolant - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 10-05-2004, 11:35 AM   #1
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Default coolant

does anyone know what the specific coolant the bonneville needs?
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Old 10-05-2004, 11:40 AM   #2
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yours use the regular green stuff. The 96 and newer uses the Dex-Cool antifreeze.
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Old 10-05-2004, 11:45 AM   #3
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thanks for the info... much appreciated
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Old 10-05-2004, 11:48 AM   #4
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Green 50/50 mix. Prestone, or peak are the best things to use. Don't ever use dex-cool.....
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Old 10-05-2004, 12:05 PM   #5
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Quote:
Originally Posted by LakevilleSSEi
Don't ever use dex-cool.....
AKA "mississippi mud" by anyone you talk to at a GM dealership
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Old 10-05-2004, 12:29 PM   #6
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Quote:
Originally Posted by 1993 SLE
Quote:
Originally Posted by LakevilleSSEi
Don't ever use dex-cool.....
AKA "mississippi mud" by anyone you talk to at a GM dealership
I disagree. DexCool isn't bad. Just can't let the coolant level get low.

I've had DexCool in a couple cars that had over 200,000 miles on them and never had one issue. Never flushed the systems either. It was just a matter of making sure that the level in the radiator and overflow bottle were at the proper levels.
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Old 10-05-2004, 12:57 PM   #7
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Quote:
Don't ever use dex-cool.....
If your car came with it, as stated in 96 and newer cars, then ya better keep useing it.
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Old 10-05-2004, 01:17 PM   #8
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Quote:
Originally Posted by vital49
Quote:
Originally Posted by 1993 SLE
Quote:
Originally Posted by LakevilleSSEi
Don't ever use dex-cool.....
AKA "mississippi mud" by anyone you talk to at a GM dealership
I disagree. DexCool isn't bad. Just can't let the coolant level get low.

I've had DexCool in a couple cars that had over 200,000 miles on them and never had one issue. Never flushed the systems either. It was just a matter of making sure that the level in the radiator and overflow bottle were at the proper levels.
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Old 10-05-2004, 01:27 PM   #9
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Be careful with this one. His 95 may have been converted. Telling him to put in the green in that situation is bad news.

Read the Dexcool info in Techinfo. There'* a couple articles, I think.
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Old 10-05-2004, 02:36 PM   #10
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Default Re: coolant

Quote:
Originally Posted by 2fastbonne
does anyone know what the specific coolant the bonneville needs?
Yeah, is your engine brand spanking new?
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