I am looking to buy another sled. Either f8 or turbo. F8 would be easier for me to work on. No dealer within a few hours drive so the turbo could cause me repair issues. But I like the idea of not putting in 2 stroke oil. So, what year did Cat come out with the 800 H.O. motor? What about the electronic reverse? Do the Turbo's need premium fuel? Thinking I might rather have the twin spar chassis instead of the 2012? what other info would I need to compare? Probably used or leftover so are there any big differences between the say 3 most recent years?