I don't believe the MVVS/ Evolution 26 and 35 have a Nikasil cylinder liner, I know for a "fact" that their cylinder liners are ground (NOT honed !!) "unless they have been changed since I have bought mine", so for that I don't believe they are flashed with Nikasil, nickel or chrome (yet I guess they could), I'm betting they have a hard chrome steel liner, well that's what it looks like,,,,


I don't think you hurt it with the Lawnboy but you should switch to synthetic !! and mixing it NO thinner than 40 to 1 is what the factory recommend's unless they have changed it again..


coronabob ,, 1 reason your motor is running so hot is the octane rating your using, a small motor does not need as much octane as a large motor does, yes the MVVS/ Evolution 26 and 35 do have higher compression than some other motors, but still the 26 is a small motor, try a rating around 88 or 89..

Jim