Has anyone had any experience with this stuff?
http://lubricationspecialist.com/front/ ... 21&p=Evans
engine cooling
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Infinitiguy19
- Posts: 7787
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1994 Infiniti Q45a 240000 Miles
Re: engine cooling
Seems like "Miracle Jizz" to me. Do some research and only put what in your vehicle requires.
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MinisterofDOOM
- Moderator
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- Car: 1962 Corvair Monza
1961 Corvair Lakewood
1974 Unimog 404
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Former:
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1995 Ranger XL 2.3
1984 Coupe DeVille - Location: The middle of nowhere.
Re: engine cooling
It's a legit product--Propylene glycol coolants are nothing new. There are upsides and downsides to both options. The big downside to propylene glycol is that it becomes very corrosive when it oxidizes. The implication that coolant systems using propylene glycol based coolants don't need to be regularly monitored or maintained like ethylene glycol or pure water is false and misleading. Corrosion due to oxidation can damage coolant system components, and oxidation of the coolant itself will reduce its heat transfer effectiveness (which is higher than that of water or ethylene glycol).
Part of the reason propylene glycol is safe for human consumption is that the body converts it to acids that are naturally present anyway. Your car's coolant system can't metabolize acids. Human bodies can. Your car is not a human. Toxicity to humans of coolant in your car's coolant system is irrelevant. Lots of s*** is toxic. Doesn't mean it's a bad option. Are you planning to drink your coolant? No? Then what does it matter if it's toxic? Gasoline is toxic. Vinyl is toxic. Lead is toxic. All of those are used in cars.
The real potential benefit of propylene glycol as coolant is that it has 50% lower surface tension than water. In coolant systems surface tension is a bad thing, as it reduces the transference of heat from coolant to heat sinks (and from the object being cooled to the coolant).
Propylene glycol actually makes a poorer ANTIFREEZE when mixed with water. Which is probably why the product you linked to is completely non-aqueous. It shouldn't be mixed with water during cold seasons.
And propylene glycol is more viscous than ethylene glycol, which means it is less efficient to pump.
So, versus ethylene glycol:
More corrosive when oxidized
Better heat transference
Poorer freeze protection
More viscous/less efficient to circulate
Part of the reason propylene glycol is safe for human consumption is that the body converts it to acids that are naturally present anyway. Your car's coolant system can't metabolize acids. Human bodies can. Your car is not a human. Toxicity to humans of coolant in your car's coolant system is irrelevant. Lots of s*** is toxic. Doesn't mean it's a bad option. Are you planning to drink your coolant? No? Then what does it matter if it's toxic? Gasoline is toxic. Vinyl is toxic. Lead is toxic. All of those are used in cars.
The real potential benefit of propylene glycol as coolant is that it has 50% lower surface tension than water. In coolant systems surface tension is a bad thing, as it reduces the transference of heat from coolant to heat sinks (and from the object being cooled to the coolant).
Propylene glycol actually makes a poorer ANTIFREEZE when mixed with water. Which is probably why the product you linked to is completely non-aqueous. It shouldn't be mixed with water during cold seasons.
And propylene glycol is more viscous than ethylene glycol, which means it is less efficient to pump.
So, versus ethylene glycol:
More corrosive when oxidized
Better heat transference
Poorer freeze protection
More viscous/less efficient to circulate