I have the Snow Performance stage 2 on my truck, works fantastic. Lowers the egt and gives a fantastic shot of power. Only problem that I have is with the lower egt I can put more coals to the fire when pulling hills so I don't really know if I am actually saving any fuel. I suspect not. But it is good to have. You can buy the mfgr specific fluid or just buy the lowest temp windshield washer fluid you can find. I use -45 celcius stuff and the MSDS sheets show that it is 50/50 methanol, water and a touch of colour.
Tow Vehicle: '92 F350, Crew Cab, 4X4, Cummins 5.9 24 Valve, 6spd.Driver:Clint, Navigator:Melanie, 1 dog (Great Pyrenees/Akbash cross) and now a cat too. Mission Statement: Just another adventure! Towed vehicle:2009 Roo 19 with lots of mods!