Here's a question I have seen brought up, what is adding oil going to do to the octane rating of the overall fuel. It really is only a concern for turbos or majors mods but something to think about. Is it going to help stabilize the fuel and prevent det or lower the octane and increase det. Also any chance it might mess with the knock sensor.
I think there is a big gap in some of the discussion going on, the guys that know how to test also tune to near perfection vs the guy that just turns up the pump.
For the guys that just want to turn it up, here is something to think about.
Turning up the pump will make the sled run richer because oil is a fuel and you are adding more oil. For the most part it wont matter but if a sled was already tuned rich and then added oil it could cause problems/ it may need tune to get the full potential, so be aware of it.
If oil is added to the gas tank it actually leans out the amount of fuel, like mentioned above it prob wont effect it but also keep it in mind. It also wont supply oil to the same places the injection will.
All oils could be different and should be tuned accordingly, so when poo says run this, thats what the sled has been tuned to run on, changing the amount or type could cause different things to happen in either direction, so you should check it out, pull plugs, pipe, etc.. and inspect.
On break in, I have heard many times people claim not to use synthetics, but when researched, (I made a lot of calls to people that actually test oil) non of them said its any different and to run whats recommended. I have only used one type of oil/additive that was such a friction reducer the engine didn't break in right.
Also, just my opinion on what I have found, researched and makes sense to me-- take it for what its worth.
More oil wont (shouldn't) effect break in, I would think more would help. Break in of the rings is established from compression, when under compression the ring push harder against the cylinder. Some say break it in easy, which in my opinion is wrong. IMO you want to load the motor hard on throttle and off the throttle, not abuse it just give it a good full load, which a little more oil will help in both aspects.
I would run at least 40:1, not sure about lower than that for octane reasons.
My experience with oil and tuning, this is not a polaris example but the concept applies so don't flame me please.
I put a delete on my m1000 and mixed with 40:1 with oe oil, (stock the cats seem to run somewhere between 35-40:1 depending on what kind of riding) had slp pipe kit, bdx intake, bd box, etc... knowing it might run leaner without the oil pump I increased my fuel pressure 2psi and then tuned with the bd box accordingly. I also tuned it rich on the low end to help get oil to transfer through everything but only enough it didn't effect performance. I then installed a PCIII on it and for some reason it caused a major low end lean bog, and I tuned that out. A few rides with the PCIII and it wiped out a crank bearing, remember I was still at 40:1 but the leaner condition just sucked all the lube right past the bearing and into the cylinder. It was quite the learning experience.
I hope this made sense and helped some.