RE-Mamamia

iTrader: (6)

thinking about just adding water without any coolant and antifreeze (in ca, no need)

what do you guys think about that?

Uncle Hungry

iTrader: (2)

Why? You could but I'd throw in something that raises the boiling point also. If not coolant than water wetter or something.

moconnor

iTrader: (14)

You will corrode your entire coolant system eventually. Coolant has anti-corrosion additives.

http://en.wikipedia.org/wiki/Antifreeze

Monkman33

iTrader: (28)

You want something to prevent corrosion and to raise the boiling point. However, you can run a lower percentage if you are never in a freezing environment.

Wargasm

Yep, you definitely need something other than just water. I think somewhere around 2/3 water and 1/3 coolant would be good.

Howard Coleman

iTrader: (6)

you need some antifreeze to lube the water pump

badddrx7

iTrader: (7)

All the above !



later

Aeka GSR

iTrader: (4)

straight water is for race only. The only advantage of running straight water is that pure water transfers heat better. Racers also usually run 24psi systems to get the boiling point higher. But for a daily driver, anti-freez covers all of what the above posters have said.

rallimike

iTrader: (1)

How would distilled water corrode anything? If you're coolant temps don't exceed 212F or 100C, (mine don't), and I'm not exposed to freezing temps....why should I reduce cooling efficiency by adding antifreeze?

ptrhahn

iTrader: (9)

The only real reason to run pure water in race environments is that it's often a rule because antifreeze is slippery and thus dangerous to other competitors if leaked on the track.

mono4lamar

iTrader: (32)

Run 20% glycol 80% distilled water max. I'm runing 30% glycol 70% distilled water...

RX7 allnight

i only use reverse osmosis water... yeah it might be over kill but i like to know theres 0 ppm in my water. theres still trace amounts in distilled..iam in ca and run like 30/70 in most my rx7's

pomanferrari

iTrader: (1)

You have it backward. Reverse Osmosis still has at least 50-80 ppm TDS whereas distilled water has 0 to 1 ppm TDS. I know b/c I have a TDS meter. Furthermore, reverse osmosis still has VOC and all the chemically bonded crap in the water. Distilled water commercially distilled has none of these.

flyboyjuge

60/40 is ideal. I wouldnt chance just putting distilled water in there.

JTurtonRX_7

For the summer just run distilled water and some water wetter

Tom93R1

iTrader: (2)

Especially if you like hearing boiling sounds coming from your engine bay after you shut down and the non-circulating water starts to heat soak.

Water wetter doesn't raise boiling point, so I always run 25-30% coolant mixture to get that few degrees of extra protection.

RX7 allnight

u need to throw your PPM meter away or your OR machine is crap. RO is '0' ppm maybe your PPM meter is not calibrated correctly..? i have three PPM(TDS) meters and my RO is always "0" ppm