Summer trip to Taylor Park with a group of people my 2010 RZR 800 starting drinking oil the first day! Got so low the first time that the valves were chattering after about 50 miles of riding!! After that I was constantly checking the oil and adding to it. Got back home to Louisiana (elevation 29 ft) and 85 miles after oil change the level has not changed. What do you think would cause such extreme oil consumption at high altitude? I’ll have to check cylinder compression but it seems if that was the case it would still be drinking oil. The RZR runs fine and still has plenty of power. Any ideas?