I have 3 gallons of Peak Final Charge Global that I'm trying to find a use for. IIRC, this is a heavy duty coolant, though I'm not certain how the chemistry differs from that of standard extended life coolants.
Can this be used in a passenger car? I'd like to use it on my '96 Grand Prix which has iron block/aluminum heads. I just installed the engine and heads, so the system is 99% free of existing coolant, so there'd be no mixing issues.