can i mix water and coolant if its the summer?

[IHateHacks]

OK Mr. Technical you wanna get technical? Just putting a radiator cap on your car doesn't raise the boiling point. Do you know why? I didn't see it in any of your posts. Its because the cooling system is pressurized, not just because you have a radiator cap. A radiator cap doesn't pressurize the coolant, the water pump does. The radiator cap regulates this pressure. When you pressurize a liquid the boiling point raises.

Originally Posted by cars4me89

The ethlyene glycol has nothing to do with boiling point

Here we go again with false statements from someone with no experience in this topic.

Yes, ethlyene glycol has ALOT to do with the boiling point. It raises the boiling point of water significantly as much as 276 degrees F at about a 60/40 concentration. But too much ethlyene glycol WILL lower the boiling point. I was a little inaccurate in one of my statements. The % when too much ethlyene glycol will start to lower the boiling point is 80% and above, and running 100% ethlyene glycol WILL cause you engine to overheat. I have the graph to prove it but I'll leave that to Mr. Nickleye.

But here is an excerpt "Customers are strongly advised to consult with their engine manufacturer before exceeding the 67% ethlyene glycol concentration. Heat exchange properties are significantly different at higher concentrations. Ethlyene glycol concentrations above 67% are counterproductive and are not recommended."

[Kuban]

Originally Posted by IHateHacks

OK Mr. Technical you wanna get technical? Just putting a radiator cap on your car doesn't raise the boiling point. Do you know why? I didn't see it in any of your posts. Its because the cooling system is pressurized, not just because you have a radiator cap. A radiator cap doesn't pressurize the coolant, the water pump does. The radiator cap regulates this pressure. When you pressurize a liquid the boiling point raises.



Here we go again with false statements from someone with no experience in this topic.

Yes, ethlyene glycol has ALOT to do with the boiling point. It raises the boiling point of water significantly as much as 276 degrees F at about a 60/40 concentration. But too much ethlyene glycol WILL lower the boiling point. I was a little inaccurate in one of my statements. The % when too much ethlyene glycol will start to lower the boiling point is 80% and above, and running 100% ethlyene glycol WILL cause you engine to overheat. I have the graph to prove it but I'll leave that to Mr. Nickleye.

But here is an excerpt "Customers are strongly advised to consult with their engine manufacturer before exceeding the 67% ethlyene glycol concentration. Heat exchange properties are significantly different at higher concentrations. Ethlyene glycol concentrations above 67% are counterproductive and are not recommended."

That last part right there you talk about. Is described in detail with video and all in that link i posted back on page 1 i think.

[IHateHacks]

I just watched that video. Very informative. Boiling points and a liquid's heat transfer abilities are 2 different things. Like it said, water is the best coolant on earth.

I like how it showed what temp that SB chevy with aluminum heads ran at 7200rpm. With 50/50 it was 228F. With 50/50 and water wetter it dropped to 220F. Straight water was 220F. And straight water with water wetter was 208F.

I've heard of water wetter before and actually used it in my supra before my BHG. But I totally forgot about it and now that I saw that video I think I'm going to start using it again.

[Kuban]

Originally Posted by IHateHacks

I just watched that video. Very informative. Boiling points and a liquid's heat transfer abilities are 2 different things. Like it said, water is the best coolant on earth.

I like how it showed what temp that SB chevy with aluminum heads ran at 7200rpm. With 50/50 it was 228F. With 50/50 and water wetter it dropped to 220F. Straight water was 220F. And straight water with water wetter was 208F.

I've heard of water wetter before and actually used it in my supra before my BHG. But I totally forgot about it and now that I saw that video I think I'm going to start using it again.

Yea watter wetter is good stuff. Im juust about done putting that new jasper engine in. Just gotta hook up the fuel and vac lines (FUN). Ill prolly run the wetter when its done (hopefully today pff).

[cars4me89]

maybe mr. nickeleye could step and inform us on the actual facts of the cooling system and what affects boiling points directly.. i would hate to misinform others.. is it the radiator cap or the ethylene glycol that affects the boiling point. thanks

[mrnickleye]

My experience, and more so, my research, has indicated that they both have good effects on raising the 'boiling point'.

Each pound of cap pressure raises the boiling point 3.25-degrees X cap pressure. So, if you're running a 15-lb. cap, then you've effectively raised the boiling point of your system 48.75-degrees or up to 260.75-degrees.

http://www.innerauto.com/Automotive_..._Pressure_Cap/

http://www.ferret.com.au/articles/66/0c044c66.asp

http://autorepair.about.com/cs/cooli.../aa081101a.htm

And all you never really wanted to know:
http://www.jcna.com/library/tech/tech0011.html