Hi everyone, I got a second hand Prius recently (2003 July) and noted that the collant level was pretty low. I called Toyota and asked them if it was okay to put a coolant from the petrol station into it, because they were different colours (mine is pink, petrol station brand coolant is green). They suggested going to a Toyota dealer to get it serviced and drained completely, then put new Toyota coolant into it. Is this completely necessary? Seems to be an inordinate expense. First car, so apologies for the newbie question. Cheers delias