April 7, 201016 yr I'd guess we can't go far wrong with 90:1 then ....might switch this ratio myself Nothing hard about cleaning out a Sherco muffler....I've done two and had a great time with both!!! Best of balance. Neo
April 8, 201016 yr It is sort of funny really, these fellows that just putt about and such ever get the bike into a hard run with some long climbs on the loop suddenly turn into a mosquito fogger once they ever get some real heat in the muff and all that accumulated crap lights off! Seems to me that keeping the mix and the running cycles correct is important! Blow it out! I typacally make it a point to do some hard WOT runs and get some real HEAT in things on every outing or ride. Rev the crap out of it! Blow it out! Do not be shy! Just do not do it on a cold motor, wait till the fan is cycling, then push it! Be sure it revs out! It seems the HEAT is what keeps these synthetic oils residues flowing through passage in the muff, rather than congealing and getting trapped! Takes some time to really transfer all that heat to the muff, and a few "drag" races up and down the field or road may be in order, in lew of a mountain climb under high loading. Most these synthetic oils were developed for REAL race bikes and perform well, yet also need to be treated as such. Thusly the rest comes into play. My thoughts, Edited April 8, 201016 yr by copemech
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