<strong>Yahoo Message Number: 63871</strong>Preparing to change coolant in our 2002 Allure, 350 Cummins. The current a/f appears to be ethylene glycol (yellow-green) and I would like to stay with the same type. <br/>Any recommendations as to which brand of heavy duty a/f to buy? Any tips on draining the system? And, does anyone have an idea of the quantity I will need?<br/><br/>Thanks! (I've searched...