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      07-30-2021, 09:39 AM   #1
itzjoker
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Drives: 2013 BMW 650i Gran Coupe
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Location: Columbus, OH

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Water wetter in IC coolant system (N63TU)

Alright been thinking about running straight distilled water + water wetter in our intercooler coolant system for this summer (alot of spirited driving and track days soon). I've done some research and it seems that water wetter is very effective in water cooled intercoolers and could help reduce IAT as much as 10F. Currently, I'm seeing consistently high IAT's (100F+ WOT no matter ambient temps). My last track day IAT's were getting above 110F during runs..not good. Anything helps with our N63's. Will definitely monitor this and report back once I do it. Will change back to coolant water mix once winter comes.

The coldest my area has seen the last few years is -11F in winter the last 10 years. I'm thinking maybe water 70/30 (or 80/20) BMW coolant for the engine? Don't want any additives to this system.

Thoughts?
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