Running Zerex Asian in my '06 Evo --
I've put a decent amount of RMI25 into my radiator/overflow tank - I couldn't guess how much, maybe 10 ounces at most. Do I need to flush the system to prep for winter (RMI25 is water based I believe), or will I be okay here. Temps usually don't dip lower than single digits at the worst, but we've had some 0 degree and negative single digit weather in the past (last winter), and looks like Zerex at 40% (comes 50%, guessing for the added RMI25) is good to -12F -- a little close for my liking. Anyone ever experience the block cracking from frozen water/coolant mixtures? Or am I just being paranoid?
Car will be in an unheated, detached garage (outside temps will = inside temps) and not driven all winter.
I've put a decent amount of RMI25 into my radiator/overflow tank - I couldn't guess how much, maybe 10 ounces at most. Do I need to flush the system to prep for winter (RMI25 is water based I believe), or will I be okay here. Temps usually don't dip lower than single digits at the worst, but we've had some 0 degree and negative single digit weather in the past (last winter), and looks like Zerex at 40% (comes 50%, guessing for the added RMI25) is good to -12F -- a little close for my liking. Anyone ever experience the block cracking from frozen water/coolant mixtures? Or am I just being paranoid?
Car will be in an unheated, detached garage (outside temps will = inside temps) and not driven all winter.