I got a question for any gm guy. I currently have generic coolant in my car and I heard that I can't switch to dex-cool. Is this true? I know gm uses it and I want to go back to it but I am just curious if there is any concerns for switching back.

 

i only use the green stuff. you will need to flush the system completely. then do it again. the orange stuff will jell up if its mixed with the green.

 

Yea that's what my teacher told me but he works for ford so he wasn't sure. Thanks for the info there craby