I have a couple applications - 65 GTO with aluminum radiator, 72 Chevy K10 and 97 Jeep TJ with stock radiators, that use traditional green coolant. Looks like the old green stuff is being slowly replaced on the shelf with universal coolants. My question is this - can I still use my old Prestone coolant tester to get the right mix, or will the newer universal stuff throw off the tester? Basically, I'm wondering if the tester only works for ethylene glycol-based coolants.
Maybe I should just drain and fill with the 50/50 premix universal stuff, I dunno.
While we are at it, does Water Wetter work and if so, does it matter what kind of coolant you use it with?
Maybe I should just drain and fill with the 50/50 premix universal stuff, I dunno.
While we are at it, does Water Wetter work and if so, does it matter what kind of coolant you use it with?