I know this is a regular issue for the 4000, but I wanted to get some clarification on what I should do, so bear with me. Anyways my coolant light comes on when I take sharp right turns. Should I just add some coolant or do I need to flush it etc.? Also what brand do you suggest i use for the fluid? Thanks dudes.

Green antifreeze is corrosive and will deteriorate your cooling system. Premature heater core failure seems to be pretty common when running the green stuff. Pentosin is expensive but it is what came stock in the car and is reccomended by Audi. It is phosphate and I think amine free? Or maybe just the red kind is amine free.. Anyways... IIRC 1996 and older VW and Audi's use the blue kind, 1997 and newer use the red kind.

Thanks dude! Now I gotta find a place that sells the **** in this town I live in haha.

i want to flush my coolant as it looks like motor oil at this point. where is the drain plug located on the 86 4kcs quattro?