Coolant is coolant right? I mean if you don't need Dex-cool or some Subaru models need a special blend or something, but for an older car any 50/50 blend should do right? I ask as I'm going to change coolant in my Ford, and it takes 3 1/2 gallons or so, so for buying coolant at the grocery store...no shit they sell it....for $10.00 a gallon is far cheaper than buying it at the auto parts store at any where from 14.00-19.00 per gallon. Thanks!