hosrom_951

Im having trouble finding phosphate-free and Glycol based free coolants. Even my porsche dealer recommends filling the cooling system with mineral water, then adding this Porsche Coolant Additive (he said that is what he uses for 944's, 928's, 968's etc). But it is a red/pinkish substance and contains glycol. There is a Caltex premised 50/50 coolant thats orange/pinkish in color again that contains etherane glycol or something like that....what should i do?

hosrom_951

sorry, a Caltex PREMIXED 50/50

Sam Lin

I run anything Dexcool compatible.

Sam

hosrom_951

Does it contain phosphate or glycol?

brad-cam

Don't think there is anything wrong with glycol. It's the phosphate you want to avoid. Here in the states, the "normal" green coolant contains phosphate. The non-phosphate coolants such as dexcool, all seem to be another color other than green. Dexcool is a glycol-based coolant. Read all about it at:

http://www.penray.com/bulletins/dexcool.htm

DAR951

I assume by your location you're not concerned about freezing, so just do like most racers do and run distilled water with Red Line Water Wetter. (See the Red Line web site for a complete listing of WaterWetter ingredients and properties, BUT it is Glycol and Phosphate free.)

hosrom_951

Sorry for sounding stupid, but distilled water is tap water right not Mineral water (mineral water as in drinking water).

hosrom_951

One more point, my dealer had this pinkish looking coolent additive, you add it to water in your cooling system and thats it. It is Glycol based, but didnt say anything anout phosphate

DAR951

Not stupid... However, Distilled water in NOT tap water. It's, well... distilled.

That's tap water that's been boiled and the steam condensed and captured, thus taking the bulk of the disolved stuff out. It's readily available here in any grocery store, not sure about there.

As for the pink stuff... Water Wetter is indeed pink, but it's NOT glycol based. Look here for the specs: www.redlineoil.com

hosrom_951

My dealer's pinkish coolant additive is ethylene glycol based. So, he told me to fill my system with water and add this 1.5L (about 1.5quarts) of that additive. Does that sound right? or should i just order the water wetter?

Danno

You can probably do both, use the additive and the water-wetter. They serve two different purposes. The typical coolant serves two functions, one is anti-free/anti-boiling, and an anti-corrosion function. Without any coolant, you may get faster heat-transfer, but you won't have the anti-corrosion protection. That's that the additive stuff the dealer recommends do. Then the water-wetter is to decrease surface-tension to help water stick to surfaces better aid in heat-transfer.

hosrom_951

so, better get some drinking water, some coolant additive from the dealer and fill up my system i guess..........

DAR951

Actually WaterWetter provides anti-corrosives as well (again, see the web site).

So there's not much point in adding both... if you're putting in the WaterWetter, you don't need anything else except water (at least in the Gulf).