I have been given an older(85-88ish) Moto 4 200-225 that runs great and I just want to do a little maintenance work. I am going to change the oil, lube every thing. Question: is fully synthetic 5w-30 a good choice and is there an oil filter on this quad? Also, although I am sure it is on the bottom somewhere, where is the oil plug?? This quad is just used to putz around the farm and maybe haul out a deer or two in the fall. It probably will rarely get into 5th gear. Thank you for any help.

Bob Urban