Ok I know I probably might get flamed for this but I heard that when changing your oil, after most of the oil has drained out...if you start your engine for like a split second, it will get the last remnants of dirty oil out. I just changed my oil yesterday but I didn't try it because I was too scared. Oh, and also I put 7 quarts or 10-40w oil in but when I check the oil level it's like only half way between the first and second lines or notches. I thought 325 engines take 7 quarts or oil...