I have a 2001 KDX 220 that I just bought. I am changing the oil tom. and am wondering what you all use? The previous owner said it was on Synthetic, but didnt know what brand or weight. I remember my 97 KDX 200 I had years ago had to run on gear oil or the clutch would slip. Also, the previous owner ran 24:1. It has the FMF pipe and silencer setup. What do you all run with this setup? Im just worried that its going to gunk up the Kips system fast since I can wipe my finger across the pipe in the back and I get black oil all over it. Thanks to all.