Quote:
Originally Posted by Daox
10) Concentrate the coolant to approx. 75% glycol
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I don't think that you will reduce your warm up time much, if at all, by using a higher concentration of antifreeze, but you WILL reduce heat transfer quite significantly, meaning that the cooling fan will have to run more and you will have to have larger cooling openings. Detonation will also be more likely with reduced heat transfer because hot spots can develop. Glycol is also much thicker than water, so your water pump will take a lot more energy to spin, further offsetting any gains from faster warmup. If your goal is to reduce heat transfer, why not use 100% Propylene glycol antifreeze, aka Prestone Lowtox or something like it? Straight PG won't freeze unlike EG and doesn't transfer heat as well as EG based coolant.