I just bought a 2002 YZ80 and was looking for the best fluids to put in it. I haven't changed the fluids yet but i wanna put the best in it. I ran my 50:1 am-soil mix from my blaster in it and it seemed fine. What kind of oil would you run and what ratio? also is there a really good coolant to put in it as well. What bottom end oil would you run?