C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Coolant?

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Old Apr 29, 2002 | 11:44 PM
  #1  
rcolling's Avatar
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Default Coolant?

I was looking thru my service manual today and I noticed it said the Coolant was supposed to be Orange? I went out and checked and my coolant is green, just like all my cars have been for decades.

Should I really use the GM orange stuff?
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Old Apr 30, 2002 | 09:17 AM
  #2  
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Default Re: Coolant? (rcolling)

Hi rcolling! I am asking a similar ??? in my post. I believe that GM did shift over to the orange stuff in 96 but I can't be certain. You might want to ask a GM tech.
I have a 95 with the green stuff, and I believe I am going to stay with the green stuff. One post to my question stated that the 2 types of antifreeze are not compatible, and will turn to mush if combined. You can flush all day long and the green stuff is not going to all come out. :U

Hope this helps. :seeya

Kizmo.
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Old Apr 30, 2002 | 10:29 AM
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Default Re: Coolant? (rcolling)

96 clearly comes with DexCool from the factory, so somebody changed over. Some 95's came with DexCool, but unsure what lines (models) and/or production numbers.

I think you could switch back with a good flush, but not much point. Change interval goes back to 2 years once green in the system. Might as well stay green.

Pete
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Old Apr 30, 2002 | 01:21 PM
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Default Re: Coolant? (PeteL)

I have been told, not sure where, that once you have Dex cool in your system, you should always run it. The switch was made sometime in 95, I am not sure when. My car was made 11/95 and it has the green stuff.
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Old Apr 30, 2002 | 01:36 PM
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From: Less Talk, More WOT | Houston TX
Default Re: Coolant? (kkonen)

i recently replaced my water pump and on the box it said only to use the orange............so now i have orange in place of my green.
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Old Apr 30, 2002 | 02:13 PM
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From: Uniontown PA
Default Re: Coolant? (C4Fetish)


Just checked my manual and it says the 96 models should use Dex Cool. Doesn't specifically mention the same for other years although I've been told I should use it in my 95.
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Old Apr 30, 2002 | 02:56 PM
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Default Re: Coolant? (95RedRocket)

although I've been told I should use it in my 95.
Why?



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