Thread: DexCool and Plugged Heater Core - What I did to remedy

Originally Posted by dazedandconfused

Dexcool is crap. Period. I've heard reports of it breaking down with less that 35k of use.

Agreed. My heat got bad and I replaced my radiator core fixed the problem but when I cut the old one open it was clogged with a red waxy substance. Flushed the dexcool out and ran water in it for a couple days flushed it again and ran water for a couple more days. Then put some ethylene-glycol in it and its been fine up to 164k. I did all this at 57k.

So point is Dexcool sucks and it costs twice as much. And is NOT a 100k 5 year coolant.