Which would you recommend for longterm saw storage?
A) Drain gas, then fill with lil bit of Stihl Motomix and let run dry
B) Drain gas, then fill with lil bit of 100LL and let run dry
C) Fill up tank with Stihl Motomix and let sit
D) Fill up tank with 100LL and let sit
Or E) Run dry on Motomix or 100LL, then disassemble and blast out with carb cleaner in addition to teaspoon of 2-stroke oilmix into sparkplug hole.
What do you consider "long term storage"?
For 1/2 a year to a year, I don't worry a second with regular E10 and quality full synthetic 2 stroke oil.
For over a year I run the saw normally and on the last use I shut off the saw with the choke. I believe, although I have no proof, that the little bit more fuel/oil mix "inhaled" before stalling, provides a better distribution into the engine especially bearings, instead of dumping some oil threw the spark plug hole, which will only coat the cylinder walls and piston ring.
Further "Motomix, Aspen, etc." = all premix fuels are designed to have a ~5 year shelf life. If this is true for openend containers no one knows. But even then I would have absolutely no problem what so ever leaving my equipment for 3-5 years with the fuel stored inside.
And last storage WITH fuel means for me, tank full to the brim. When filling I often tilt my saws because I know they have "air pocket" areas so that the tank is NOT really full. Storage WITHOUT fuel means for me, empty the fuel tank and if you have a pump system, pump and empty the tank again a few times. You will be surprised how much fuel is in the fuel delivery system! Without a pump system, I pull the choke out full and with turned off engine pull the starter a few times.
Then I also store my two stroke equipment in ambient temperatures. That means for me NO larger temperature fluctuations. Having them stand on a sunny shelf in the window of the shed is about as bad as it can get!
7