Well put!Oil will not improve or decrease engine preformance, the only real time oil affects performance is when you APV's gum up.
Good oil, your APV's will not gum up that regular and when they do it is easy to clean
Poor oil, your APV's will gum up faster and they can be a PITA to clean one time I had not choise but to use non synthetic oil because that was all that was there, my APV's ended up starting to stick after a few hundred miles on the non synthetic oil
Most syenthtic oil should work fine in your sled
Yes, run your oil down as much as you feel safe and then just top it up with your new oil....or you can get a little hand pump and pump out all the oil[/b]
how do you properly tune your oil pumpyep, the brand of oil isn't as important as having the oil pump correctly tuned...[/b]
Well sorta....I was using yamablu 2 non synthetic....the suff you would use in a bravo 250 or any fan cooled sled, one of the cheapest oils out there....I was low on oil and there was no synthetic anywhere for a hundred miles, I was not going to walk 100 miles home in the middle of winter in the Arctic, that is like suicide up here...so I use what was avaliable at the time.If you gum up valves in a couple hundred miles you must have been burnig coal in your engine.[/b]