I bought this 1996 Seadoo XP about 3 weeks ago. The guy I bought it from ran it out of oil. he had the motor rebuilt in Nov. and dident have them put the oil pump back in. so any ways I mix my own oil/gas do I need to put oil in the tank? I had a guy tell me these models have a gear that needs to be oiled and I dont know if that is true or not? let me know, Thanks, DJ