Hey there. I am new to the forum. Had my 2001 Audi A6 2.7T for about 3 yrs. Love the car. Cant say enough good things about it. Here's the problem. This morning, in a rush, I topped off the colant with general green anti-freeze. Poured in on top of the red/orange stuff already in there. After putting it in i decided to double check what I had done (I know, should have done that first). Anyway, after reading some articles that tell me NOT to mix the two....I'm a little worried. Read a little on the procedure to flush the radiator, and its a little beyond my mechanical ability/tools/whatever else. Anyway, what will this do to my car? How bad is this? My girlfriends father owns a shop and he should be able to do the flush, but might not be for a couple days. Any tips, words of reassurance, warnings...anything?