Is this right?

[mtoxracerfss]

I've heard a couple people on here say using 70% water to 30% coolant is the best way. Wont that lower the boiling point? And if this is true what benefits does it have and why?

thanks.

[MassSupra89]

Water will not lower the boiling point, it will however raise the freezing point.
So if your car sits overnight in a cold area, I'd run more coolant, but if your car is never exposed to cold climates you can safely run more distilled water
http://www.supramania.com/forums/showthread.php?t=13359&highlight=coolant+boiling+point

[The Reaper]

i believe that water cools easier than coolant tho, no??

[87_7MGTE]

^heat transfers to water better than coolant, yes

[3p141592654]

Correct, pure water has more heat capacity and lower viscosity, so is better for cooling. Another job of coolant though is to control internal corrosion. So when playing with the coolant/water ratio you need to also consider the impact on corrosion control and coolant longevity.

[mk3some]

i dont know why you would ever want less coolant than 50 50 especially when manufacturers recomend at least a 50-50 mix...i guess more cooling because more water makes sense but i dont know if i even believe water cools better than COOLANT...honestly ive had great luck with all my cars when i switched from the green stuff to global peak coolant.......

[mtoxracerfss]

So does anyone have any proof of the better cooling properties, because im flushing coolant this weekend and i want to know what the best thing to do is.

[87_7MGTE]

50/50 is always a good mix for all year round, 75/25 is good for summer. best performance would probably be something like 70/20/10 (70%water/20%coolant/10%water wetter or equiv)

[JustAnotherVictim]

70/30 should be good, it's a good mixture for cooling benefits and corrosion protection.

[Suprapowaz!(2)]

Someone once told me that he ran straight distilled water with a bottle of water wetter. Does water wetter protect against corrosion?

[87_7MGTE]

^water wetter might do that, i know one of water wetters main purpose is to take all the tiny air bubbles off the cylinder walls so the water comes in contact with the cylinder walls better

[thesandymancan]

i thought watter wetter lowerd the watter temp. i.e. cooling the motor.

[Yellow 13]

How can you make water wetter?

Guy I bought my parts supra from has an 8.4 second Camaro he runs straight water with.

[87_7MGTE]

^thats because a lot of tracks dont like you to run coolant i think?

[bigboost7m]

I use Toyota's 50/50 premix and it works great, i also use Royal Purples purple ice and have had better results with that than the water wetter. I also have no thermostat so my motor stays pretty cold. I checked the coolant temp at the radiator using a temperature gauge after driving my car really hard for about a half hour and it was at only 136 degrees!

[BosoMKII]

I checked the coolant temp at the radiator using a temperature gauge after driving my car really hard for about a half hour and it was at only 136 degrees!

Thats not good. Your engine is designed to run at a certain temp, your running your engine too cold. Not to mention that a thermostat helps create pressure in your cooling system. You need that pressure to help move the coolant, otherwise it will just sit near the cylinders for too long and over heat. Plus, lower pressure loweres the boiling point of the fluid, making it cabable of holding less heat.

I have never heard of racetracks prefeering no anitfreeze, but if that is the case then its probably because the glycol ( IIRC thats what it's called ) will make the track more slippery than just the watter incase of cooling system failure.


i dont know why you would ever want less coolant than 50 50 especially when manufacturers recomend at least a 50-50 mix...i guess more cooling because more water makes sense but i dont know if i even believe water cools better than COOLANT...honestly ive had great luck with all my cars when i switched from the green stuff to global peak coolant.......

87-7MGTE and 3p141592654 already stated why you would want to run less anti-freeze. Its called coolant because of its function, not because its the best substance for the job. You could put melted ice cream in and call it coolant but there would still be a better choice as far as heat transfer goes. If antifreeze where better than watter, the Toyota would reccomend 100% anit-freeze.
A 30/70 mix is pretty standard, it always works with no bad side effects. If you live someplace where water freezes in the winter stick to the 50/50.

[supra90turbo]

I use Lucas oil additive because they sell it at Autozone.
They said that when you whip the beater around, and the air bubbles stay in the oil, that's good for cooling.

[mk3some]

^autozone is not the only store that sells lucas, and what are you talking about?

oh yea and autozone sucks ass!