If I remember right, don't wet sleave diesel engines require this or an additive for corrosion protection?
Some people make the mistake of mixing straight antifreeze to strong and reducing the cooling effects. I've installed a few chillers in my day, in commercial jobs. You have to take the size of pipe + fittings + expansion tank + pump and calculate the volume of water, calculate the gallons of anti freeze to be used at a certain set point, buy antifreeze by the 55 gallon drum and start fill procedure. Most engineering firms /all mgr's require a test by a independent testing facility before warranty can go into effect and sign off by engineering firms, the ratio can affect cooling capacities of a chiller, big time. But hey I'm just a dumb ole plumber!
