I've used it on all my 2-strokes for years. Great stuff, and very clean. I buy most of my saws and other 2-strokes used, and the large majority have been run on conventional oils. I can't tell you how many times I've picked up those units and seen a lot of carbon and sludge buildup, and after 5 or 6 tanks of Amsoil mix, they are cleaner and running smoother.
I'm sure it'd be the same with most high-end synthetics, just that for me it's been Amsoil.
Your last statement is correct,,, I have seen the same results with The Ultra HP in Chainsaws, stringtrimmers, brushcutters, polesaws cutoff saws, edgers, that have been rented & run for years with the orange bottle dino based mix,,, I small engine tech part time at an OPE dealer's shop who is a personal friend of mine to help when they get behind,,, & cause I like piddling with motors and making them run!!!
they rent (with 1 gallon of mixed Ultra fuel) all of the two stokes I just mentioned and they buy and mix 35 gallons of non ethanol 89 octane fuel at a time,,, when Ultra HP first came out back in 06 or so,, they switched to it from the orange bottle,,, I dont know how many tanks it took,, but the first one I had to tear down after the switch was an older 08S Saw that the bearings seals were pretty well shot or the crankcase was damaged,,, (cant remember it's been a few years OK!!!!!!) :bang: from the years of rental abuse,, anyways, I had to pull the jug ,,, and was use to decarbonizing them in the past before putting them back together,,,, I couldnt believe how clean the top of the piston/Exh port/comb chamber were,,, I am not kidding I barely had to clean those areas at all,,,
that is the same day I switched to Synthetics,,, in my OPE stuff,, its funny I have been running the Klotz Super Techniplate on my 2.5 LITER Merc Hi performance division fishing motor,,, that is no where near stock,,, BTW!!! and my buddies drag boat runs a mix of R-50 and the 80-20 w bean oil,,, he says the bean oil can handle the heat like no esters can,,, FWIW,, he's been racing two smokes sucessfully for a very long time,,, some of his past national record holder RC boats run the bean oil based Klotz on Nitro w/methanol and turn well in excess of 22K rpm over 105 MPH,,,
Dont yall just love oil threads!!!! who started this anyways???