YELLO C5

Using a used short block. Previous owner had pink coolant in it. I assume it's extended life stuff. Any problems going back to Dex-cool? Most of the other stuff should be out since I've turned the block over several times.

RedZMonte

shouldn't be... Dex-Cool and most other are all Ethylene glycol just different color. I worked at Lexus and the Toyota coolant was basically the same junk as the other manufactures stuff just different color.

punz

Isn't Dex-cool pink?

YELLO C5

Orange. At least last time I checked.

Cybermind

To the OP; Dex-cool is the "pink coolant"! It's the same stuff. Sometimes it appears orange depending on the mix ratio.

To RedZMonte; NO, Dex-cool is not ehtylene glycol. It is propylene glycol. Not the same and definitely not compatible.

You should never mix Dex-cool (pink coolant) with ethylene glycol coolants (green) or you will have a serious mess on your hands.

leadfoot4

Dave concrete

Absolutely flush out system to be sure.

baxsom

a buddy of mine found out what happens when you mix the orange and green fluids. turns into a brown sludge.

Dave concrete

Exactly what happened to me. then the rust began and that was it.

YELLO C5

Is it better to have the dealer or a shop do the flush since they have the equipment?