As can be read, opinions here are wide and varied.
Like many, but not all, these 1330 setups utilize a shared oil system. The engine oil is also the oil for the wet clutch and gearbox. Because of this, an early oil change should be refilled with the lesser quality BRP oil. The filter should be changed also since it has trapped particles in it.
That said, the cylinder, which are Nikasil plated, can require a realistic time to burnish pistons, and bed in piston rings. Unfortunately, the straight cut gears begin to self destruct the instant it gets run. Over time, those sharp edges on the gears wear or chew into the mating gear. Same with the primary and clutch driven gear.
On our Spyder, a 1330 powered machine, the original oil was run for about 2000 miles. At that point, I accomplished an oil and filter change, utilizing the Can Am oil change kit.
I wanted a less slippery oil until break in was comfortably accomplished. Oils that are really good can create concerns of not getting the rings to seat.
So for 3000 miles or so, our Spyder ran Can Am oil. The second oil change, and every oil change since has been with Mobil 1 10w40 motorcycle oil.
Even though broken in with oem type oil, as more miles were logged on the Mobil 1, at about 5000 miles, the engine had fully bedded in and freed up.
I prefer this type of break in, with the interim oil and filter change to remove debris, but letting the lower quality oil ensure the cylinders, pistons, and rings, are ready for good oil.
I also decided that from the next, and soon to be accomplished oil and filter change, I am going back to the oem Rotax filters. Ran a HiFlo last oil change and decided saving a few bucks was not within a good comfort zone for me.
I also accomplish oil changes each 5000 miles. Certainly could go a bit more, but the calendar time factors in.