Coolant Confusion

[Foggy]

The newer "extended life" coolants can be mixed with any color ... And they come in several
colors themselves depending on brand.. Some are greenish, yellow, orange, etc
The dealer prob just buys the extended type in bulk so they can add it to any of their makes/models
that they service.. They don't just do GM stuff at a gm shop (used cars, etc)

I personally like to keep all my gm stuff using the "orange" dexcool... Any of the brands are fine..
If it says specifically for GM Dexcool , it will be orange
BTW it's only good for 2-3 years.. The 5 year thing is ********... You'll be replacing waterpumps, hoses, radiators, heater cores...
when you go out to 5 years on any of the coolants
The "green" old school coolant that was used 25+ years ago is almost impossible to find anymore.
I have some customers with older muscle cars that want everything to look OE and they have to go
out and find the old green stuff.. PITA

 

[Doubeleive]

 

[gooffeyguy]

I have 3 vehicles that take green, and 3 that take orange. Like stated above, some coolant is compatible with both. I have some that is actually a light yellow color and when added to green keeps it green and when added to orange keeps it orange.

 

[Geotrash]

Compatible to me means chemically stable, not necessarily optimal.

 

[Rocket Man]

Maybe call and ask the dealer what they might have put in it? Myself, I’d do a drain and flush and put Dexcool in it.