Dextcool question...do I have to?

[elanddp]

Why does it say to only use that brand coolant? What if I use another? ??

[alblogg]

Because GM wants to control every part of your life. No you don't have to use it as if you will read some of the past threads on here a lot of us don't. If you do choose to change to the green stuff and stop using the orange you need to do a complete flush of the system and if you still have that GM rad cap on there throw it away and replace it with a Stant brand cap.

[richtazz]

Dex-cool is incombatible with old ethylene-glycol anti-freeze, as the two will gel and clog the cooling system if mixed. I disagree with the stant radiator cap suggestion, stick with OE. Most newer green/yellow antifreeze is now compatible with Dex-Cool, so read the label and you should be fine.

[wymi]

I agree with a different radiator cap other than gm oem, mine broke in to 2 pieces.

[jwalker1970]

I use extended life coolant by Prestone. It's yellow, mixes with dex-cool or standard green. I buy the advance auto parts house brand (same as prestone) Much cheaper than Dex-cool, same protection!