April 9, 200422 yr Non-aqueous propylene glycol. It has a better heat transfer rate than 50-50 water/glycol mix, won't boil, and is non-poisonous. It doesn't form air pockets in the water jacket of the engine, so there are no localized hot-spots that can aggravate metal warpage. Grassroots Motorsports magazine did an article on it that seemed very imformative. Yeah the stuff is expensive, but so is a blown head gasket. Read the entire article, please. http://www.evanscooling.com/html/npgPls.htm
April 9, 200422 yr Author And here is a page from GRM magazine... http://www.grmotorsports.com/mustanggt.html
April 10, 200422 yr Sounds pretty friggin' appealing to me providing no unexpected nasty side effects crop up over time. Didn't see a price. How much is it? -Louis- '04 ForesterXT 5spd '91 Loyale 4wd 5spd Wagon
April 10, 200422 yr Author heh heh heh... About $25 a gallon. Theoretically, you never need to replace it. I'm gonna seriously consider getting some for my Jaguar when I swap engines, jags have problems with the head studs rusting in half. I like to avoid that sort of thing. I'm gonna look into getting a 55 gallon drum for the vehicles at work. About $1100 worth.
April 10, 200422 yr Just bought a 97 Lagacy Outback, 2.5L DOHC, I have been very happy with it so far... Is the HG a problem on this engine. Just wondering? H
April 10, 200422 yr 25 bucks doesn't seem so bad considering the possibilities of this stuff. I just wonder if it would void my warranty. Don't wanna give SOA any excuses for not repairing my engine if the need arises...even if I know it is better than what they put in it at the factory! -Louis- '04 ForesterXT 5spd '91 Loyale 4wd 5spd Wagon
April 10, 200422 yr Just bought a 97 Lagacy Outback, 2.5L DOHC, I have been very happy with it so far... Is the HG a problem on this engine. Just wondering? H I don't have any personal experience with that model, but yes, I believe that is one known for headgasket problems. I wouldn't lose any sleep over it though. Just keep the cooling system in top condition.-Louis- '04 ForesterXT 5spd '91 Loyale 4wd 5spd Wagon
April 11, 200422 yr Author http://www.evanscooling.com/catalog/C_npg1.htm go to the bottom of the page for ordering info
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