[flash]

odd - exactly which product do you have?

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[Lear35A]

NPG+

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[flash]

odd contradiction

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[MB968]

Well guess you won't be drinking that. Quess they were just kidding on the video. Anyway, if memory serves, 100% EG has a lower boiling point than 50/50 with water (or was it just no benefit in lowered freeze temp).



Maybe there is someone on this forum with more chemistry background that would know the answer. Does a 70/30 ratio of EG/PG give the higher boil point quoted at atmospheric pressure as compared to a 50/50 EG/water mix at one atmosphere pressure.



Does the mfg. make any claims for the boiling point in a typical 15 psi system? If that is significantly higher, that could be useful for track cars or DE cars (but only then ones that can use EG).

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[tamathumper]

Interesting, it says it has an ADH inhibitor added to reduce oral toxicity, but has not been granted a labeling waiver for products containing EG, so it still has to have the standard EG warning,... you really gotta trust the chemists either way, but seeing the warning makes it extra squirrely.

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[jfrahm]

Plain ol' Peak coolant is 97% Ethylene Glycol which boils at 387F (197C) so maybe you can just run that. On the street, that is. On the track it would probably not move enough heat to keep you cool.



The advantages I see: No localized vaporization which can cause hot spots, particularly in a boosted motor. Less erosion of the head gasket, etc. Lower pressure (assuming you get a 0 psi cap) reduces hose and heater valve failures. Pressure would build up due to thermal expansion if you did not switch caps or leave the cap loose.

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