Waterless coolant.

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Sep 30, 2022 | 08:55 PM

C5FAB

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Waterless coolant.

What are the pros and cons with waterless coolant? I live in NJ and lately the summer temperatures and getting hotter so is it worth the changeover?

Oct 1, 2022 | 01:09 AM

vette4fl

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Here’s an article with pros and cons, and a video with Jay Leno. This is supposed to have a boiling temp at 375°, and last forever. Interesting concept considering the engine will never boil over.

https://greengarageblog.org/17-waterless-coolant-pros-and-cons

Part 1

Part 2

Last edited by vette4fl; Oct 1, 2022 at 01:33 AM.

Oct 1, 2022 | 07:23 PM

C5FAB

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Thanks. Good info

Oct 2, 2022 | 05:15 PM

grinder11

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One BIG con is Propylene Glycol doesn't dissipate heat as well as Ethylene Glycol. Sure, it doesn't boil at the higher temps, but all else equal, it will run slightly hotter than regular antifreeze....

Last edited by grinder11; Oct 4, 2022 at 10:39 AM.

Oct 2, 2022 | 05:39 PM

Fast one

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I used it once in an iron block car, the high heat of the coolant cooked the rubber hoses so they weren't as pliable.

Oct 2, 2022 | 08:54 PM

vette4fl

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It seems that the main deficiency with waterless coolant is that our engines were not designed for it. For example, let’s say it is indeed less efficient at conducting heat (as the manufacturer stated) but is much better at preventing corrosion. That’s better for all aluminum engines, but requires a greater radiator capacity to account for the slower release of heat.

My opinion is that engineers are more concerned about efficiency, compactness, and production cost. I don’t see waterless coolant as being consistent with those goals.