I have been running Motul 710 2t for over 10 years at 80:1 in my current 09 Evo 290. Always starts first or second kick and never any smoke and have never fouled a plug. I also ran it in 2 previous Rev. 270's with no issues. I do run half pump premium and either VP 110 or C12. I also use it in all of my 2 stroke power equipment at 50:1 on pump premium with no plug or clogged exhaust issues. Love this stuff, I bet I have burned 5 gallons of it over the years. Plus the fact that the green oil with green C12 looks really kool, I have been told the difference between the 710 and the more expensive 800 is that the 800 has a downstream detergent package to keep power valves, which we don't have in trial bikes cleaner.
I had a importer for GAS GAS tell me the same thing, they ran the Pro's at 80:1 no issues. I seem to like the Motul better than another oil a lot of guys are running. Smells a heck of a lot better anyhow and has a good history from what I'm reading... I've heard a few gassers that had run 80:1 from new and some sound great, others have a little top end rattle which could be arguably from lean oil mixing, poor warm-up, possibly cold seizures, out of round pistons...who knows? Hoped to not start a debate on mix ratios, just what has been working great with no issues and possibly a few jetting tips.
Thanks!