basically you could buy a haevy duty diesel coolantlike power cool (detroit diesel stuff)its fully inhibited with a 1800 ppm nitriate count and its cheaper,they had issues with errosion of cylinder liners and heads when they first introduced the 60 series engine so they had this coolant brewed up for them.cat cummins probably has same coolant cummins has apretty blue dye in it <img src="/forums/images/graemlins/cheers.gif" alt="" />

05 rubicon rustys 3 in susp and ther stuff