I loved my Dad when he was alive, and he was a great MD. However, he would sometimes be wrong and my Mom would get us second opinions when we would get sick.
With that being said, here is something you need to look at: BRP sells oil change kits in their accessory store, so in a way the manufacturer is letting the owners do their own changes. They still will encourage you to do it at a dealer since they can do more in-depth analysis and of course, hook it up to BUDS to make any necessary computer updates and make sure all sensors working.
Like Mark Lawson's article said, "The Federal Trade Commission (FTC), the nation's consumer protection agency, says no. In fact, it's illegal for a dealer to deny your warranty coverage simply because you had routine maintenance or repairs performed by someone else. Routine maintenance often includes oil changes, tire rotations, belt replacement, fluid checks and flushes, new brake pads, and inspections. Maintenance schedules vary by vehicle make, model and year; the best source of information about routine scheduled maintenance is your owner's manual."
That is your answer, arachnaphobia. And :welcome: