slopoke

well the title pretty much says it all, does it harm anythign to jsut run water? thanks, scott

Flybye

No its NOT ok. Anitfreeze has special anti-corrosion chemicals in it. Without it, your coolant system will get ugly real fast. Also, coolant has a higher boiling point than regular water.

Bacon

iTrader: (12)

not for a long time
water=corrosion
85-15% minimum for your area this time of year...
90-10 is fine in the summer..

Brad

how bout this http://www.pineappleracing.com/Prod-EvansNPG.html

check out the EVANS NPG+ coolant. -40 to 375 degree protection. 100% completely waterless coolant (NO CORROSION - EVER), 0 psi system, and your cat can drink it and live!

Bacon

iTrader: (12)

evans will be in my new motor in abt 3 weeks..got a case just chillin in the garrage..

its some incredible ****

slopoke

thanks for all teh replies, i guess i will put somein tomrrow, and as for the evans coolant, can i drink it and live

martini

not only does antifreeze act as an anticorrosive. But also as a lubricant for your water pump.

You can use just water and water wetter though.

JONSKI

Well, although glycogen is a form of sugar, it is quite toxic. (But it tastes so sweeeeeeet). I hear that it makes your urine glow under a blacklite, too. (Hand some out at a rave) :P: Antifreeze also raises the boiling point of your coolant. This happens to be important for RX-7s. As for the evens coolant... Tell me what you think. BE A LEADER!!!

MastaCow

Actually, I think you might need to add some water pump lube to the water/waterwetter mix. I don't think the water wetter has enough lubing properties to satisfy the mix.

Around here, a few of my friends go the distilled water/waterwetter/pump lube route...especially this time of year.

I think using 50/50 mix actually runs hotter than 80/20-but it'll freeze a hell of a lot faster.

That's whats so nice about living in CA.

neevosh

I've tried that before, it didn't work at all for me. I'd just installed a new Fluidyne radiator and it ran hotter that the stock radiator, even with the fans on. I flushed the system and used a 70-30 water/coolant mix and it worked great. I don't recommend just water and water wetter.

Zoomspeed

when you run just water arean't you suppost to run 2 or 3 bottles of water wetter and the rest water? did you try that?

Its been awhile so I'm not sure if I read it on the bottle or if I just dreamed it up.

95R2-89TII Ground Zero

Not to mention that in the cold the water can freeze and expand...and that means damage.

Brad

Look, guys...you obviously didn't go to that link and read about the Evans NPG+. It is expensive, but guess what? You will NEVER have to change your coolant again! Here...let me help some of you out...

"Evans NPG+ is a special waterless coolant with a 375 degreeF boiling point at zero psi and does not freeze until -70 degreesF (it contracts and gets 'slushy'; not really freezes). Because it is non-aqueous (no water), corrosion is virtually eliminated and there is no need to change it yearly. In fact, it has been tested for hundreds of thousands of miles with no signs of degradation, according to Evans. While the initial cost is high, compared to ordinary coolant, it is a bargain over the life of the vehicle.

Ordinary coolants operate at the verge of boiling, which puts them at high risk of localized boiling at hot-spots within the engine, even when coolant temps otherwise appear moderate. Any localized boiling interrupts heat transfer and potentially creates a cycle that leads to overheating (hot spot gets hotter and hotter, until it gets out of hand). Ordinary coolants also require the system to be highly pressurized to raise the boiling point to the required operational temperature. This puts stress on all the cooling system (seals, hoses, etc.) and poses an additional risk of a leak that depresurizes the system and drops the boiling point of the coolant below operational temperatures. Evans NPG+ coolant, on the other hand, can be run at zero pressure and has a remarkably high boiling point of 375 degreesF. Because its boiling point is so high, localized boiling is eliminated and overall heat transfer is greatly improved. What you will notice is (1) your vehicle will get up to operational temperature in about half the time, (2) it will then stay right in the optimum temperature zone even when driven well beyond what ordinary coolants could endure.

We have found that most cooling problems in RX-7s are due to overtaxing the coolant, rather than other components of the system, like the radiator. Upgrading to a big aluminum radiator is not usually necessary with Evans NPG+, because the stock radiator becomes more effective using a coolant that better transfers heat. Evans NPG+ is far more cost effective than a new radiator!"

Forget about this 'just water' crap...spend the $80 to get the EVANS and be done with it! Your car will love you for it, I promise.

DamonB

You're right, coolant does have a higher boiling point than water. Water however has a higher thermal exchange efficiency than coolant. Water therefore can get more heat out through the radiator than water/coolant can because of this. You'll run lower temps with the largest ratio of water to coolant possible. So in the summer run about 10% coolant for the water pump and corrosion protection and in the winter run as much as you need to prevent freezing.

mrb63083

iTrader: (4)

What is the best antifreeze to use on third gens?

hawaii rx-7

just use about 20%coolant to 80% water and it should be fine if your not in subfreezing temps

rynberg

I wouldn't imagine there is much of a difference between brands, just make sure to get an ethylene-glycol based coolant. And use distilled water, not tap water.

Tim McCreary

Well, nothing is perfect. Maybe with a little more research, they can figure out how to make them die.

Tim

IWNTA20B

Always use distilled water and coolant. You can't consider distilled water expensive can you? You only change it every 6-12 months.
After my motor overheated from various problems, I am **** about using it since I saw what tap water does. Anything that is used to cool or lubricate should be changed often and use QUALITY brands.
NEVER use just water. You'll end up having rust deposits and water pumps need some sort of lubricant.