Hello, I am new to this site and it's forum. I just got a 1993 90 cs quattro that I can tell ithas been around the block. It drives great and I love it. There are, however,some concerns that I am having. I bought it at a cheap as is price and I want to fix it up. There is a knocking or popping sound when I am on back roads at low speedsgoing over bumps or turns, I am wondering if it's the springs, shocks, ball joints or whole setup.There is also a clear oily fluid and some break dust on the front wheels soI also need to find a good deal on brake parts, a wiper fix, a hood latch fix, an exhaust, and I also need to find a reliable mechanic. Oh and if anyone knows where I can find a repair manual for this particular model (in book form) please let me know, it would be a life saver. So any advice on parts deals, diagnosis, and how to's, or just anything else at all, is definitely welcome. Thank you so much.