[The_Bishop]

That Evans stuff is pricey as hell. Aside from it supposedly lasting forever, what other benefit is there?

Edit: Did some preliminary searching

Found this bit of info about it, and it's not all good news:

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Evans coolant is 100% propylene glycol...no water added. Cool thing is it doesn't boil until 360F. Thats great when you think about localized boiling around the cylinders causing hotspots with conventional...with Evans there's no way you're going to get hotspots in the combustion chamber that can possibly cause knock. Bad thing is propylene glycol's specific heat isn't all that great. That effectively makes your radiator act like its smaller than it really is. That also means that when your engine makes a fixed amount of heat the Evans coolant temps will rise more than water will. That's all fine and dandy when you remember that it won't boil until 360F...it has plenty of overhead. The bad thing is the fans run more often than they should since the stock computer thinks you're getting hotter than you should be. The other bad thing is your oil temps go up from the extra heat in the block so you need a nice big oil cooler to manage things. Granted Mobil 1 says its good for 400F but I know most road racers shut things down at 300F. Other negatives to the Evans coolant are the cost and the large expansion rate range of the fluid with temperature swings.
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