What is the oil type for a 2000 CR125R?

Well if your talking about the fuel oil, it 32-1 with any 2 cycle mix. The oil that goes in the crankcase, im not to sure, but i use 5w-20. Theres a screw on the cover, mines a Phillips head screw but it could be any shape or form, but take that out and fill the crankcase up till it flows out off the hole. Be sure you took off the right screw and not the cover screw. (it sould look different and be up from the bottom.) hope this helped