Quote:
Originally Posted by COMP
good link
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Did you look at the pics?
The radiator in my '96 ImpalaSS was aluminum. Chevy put Dexcool in the radiator from the factory, plus thay added these mysterious brown tablets that were supposed to stop leaks. End result after a few years is the radiator and heater core were all blocked up with sludge. Looked sorta like this
A lot of guys Impala guys know successfully cleaned out all that crap with the RMI, so I tried it. I did one bottle RMI with distilled water for about 5000 miles. Then I flushed and refilled with 50/50 Prestone and another bottle of RMI. My heater magically started working again, and the engine was running cooler. The next year I flushed it again, and it looked nice and clean on the inside.