Better safe than sorry. Get the wrong stuff and your cooling system will look like Elvis' arteries.Hmm. I thought most cars radiators where made of the same materials.
:+1: MM got to it before meStraight anti-freeze (100%) will FREEZE before anti-freeze mixed with water.
You can already buy it 50/50 mixed, or get a gallon of "distilled" water at the grocery store and mix the full strength anti-freeze with that AT 50/50.
Tap water will corrode up your insides.