Blue Antifreeze is usually indicative of BMW or VW "factory" stuff that you can get at their dealers. Very good antifreeze, especially formulated for their large-scale use of aluminum. Original DMC stuff was the normal green (like Prestone) color. Dave Swingle --- In dmcnews@xxxx, "vin4258" <vin4258@xxxx> wrote: > Does anyone know what color the factory antifreeze was? I was going > to change mine since I don't know if it ever has been, but it looked > fresh, so I put it back in. It is blue but I have never seen blue > before (or heard of it.) If it is original, do I still need to > replace it even if it is clean or not? > Thanks > Cam