I pulled the cap of the overflow, and there is black residue lining the sides. What do you think this might be? What should I use to flush and clean with? What brand name coolant do you recommend?
that black stuff is the main reason i HATE dexcool. flush it with either water or zerex super rad flush, refill with anything but dexcool. never look back, and enjoy the money you save by not using dexcool.
JBO Stickers! Get yours today!
And whatever you do....DO NOT mix Dex-Cool with the green stuff. It has to be either or.
97 Cavalier Z24 @ 85k
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