Sums it up well! You wouldn't buy a brand new car and instantly drive it around everywhere on the rev limiter or sit on the drive with your foot flat to the floor needlessly revving it? You're a little gentle, let it rev, make it work but show it a little empathy? Probably... So for the first tank try and be gentle, no WOT out of the cut etc. You're not going to 'bed' a hardened steel bearing into a hardened steel crank in a few tanks of fuel, I'd imagine it's more to ensure everything has a good coating of oil and moving properly before you expose it to excess load and heat. I'd imagine that there are as many contradictory threads about oil mix, Stihl have been stipulating 50:1 for how many years? I'm not bothered by it so don't read them but I have glanced on threads saying that more oil is a waste of money and can be detrimental, lowering the octane, excess carbon etc. I use 50:1 plus 10% to allow for any miss-calculation or slight overfill of fuel / under measure of oil, works out about 45:1 on a good day. Still std red as the saws I have were designed to use it, modern stuff synthetic.