I understand to use dex-cool coolant with 50/50 mix. I was just wondering if its safe to use the already mixed 50/50 like this stuff Prestone/1 gal. 50/50 Dex-Cool antifreeze and coolant (AF850) | Antifreeze | AutoZone.com instead of buying coolant then mixing it with water, my tank level is a little under the fill line so i want to add some.

 

the premix is best you will not have the impurities in the water or you can buy distilled water and mix it 50/50.

 

It's perfectly fine.

 

Thanks guys I really appreciate it.