My owner's manual says I should fill my system with 6 quarts. I usually get 50/50 mix.
If I get full strength antifreeze to save money, how do I measure 3 qts of water and 3 qts of antifreeze?
Should I put water then antifreeze into radiator?

 

what i usaully do is take an empty gallon antifreeze jug and fill it halfway with the unmixed coolant and put them next to each other and see that there both at the same halfway mark and then just fill both of the halfway filled jugs with water and then you have 2 gallons of 50/50 mix coolant.