Mustanger69 0 Report post Posted September 17, 2020 replacing my radiator in my 1969 302 mustang unclear on what kind of coolant the acp replacement takes or how much also not sure if it has to be waterless witch I've aswell heard if u can help me out please reply thanks! Quote Share this post Link to post Share on other sites
Vicfreg 771 Report post Posted September 25, 2020 Find a top quality over the counter brand that is pre-mixed with distilled water. The distilled water is important to use with aluminum radiators. Pick one of the yellow/green brands like Prestone instead of the red type. I would drain the cooling system, and use all new 50/50 mix, top it off as normal. Quote Share this post Link to post Share on other sites
