Is there anything wrong with putting a carb cleaner additive in your sleds gas? Can it hurt the motor? I know it is not a replacement for cleaning the carbs, but it could keep them cleaner. Most manufactures state on the bottle that they can be used in all 2 and 4 stroke engines.
Where I sled: Wherever there's snow! When HELL freezes over...I snowmobile there too!
I am not sure. I would just remove the carbs and clean them yourself. By adding to many additives to the fuel tends to reduce viscosity and the high compression engines in sleds need the higher octane rating to avoid knocking. However, a little isopropyl is okay just not too much. Cleaning the carbs is not really all that big of a deal so take the time and do it right so you will have many miles of fun!
Life's journey is not about arriving at the grave in a well preserved body, rather it is to slide in sideways, totally out of control, completely worn out, screaming, HOLY POOP WHAT A RIDE!
Been running it in street bikes for quite awhile with no issues other than the fact that they seem to run poorly
while the stuff is in the tank. If I were lacking the skill/time
to pull the carbs/injectors/fuel pump down, I don't think I would have many reservations about running it in a sled -as long as I didn't have any long, wide open runs planned while it's in use (until the next fill up). It has cleared up some problems in the bikes, but I'd like to note that some of the jets used on the bikes are much, much smaller than what you are likely to see on a sled.
Just my 2c
'07 Apex RTX w/Pro X suspension conversion, Fox Floats w/resi's, Doo extro drivers, Cobra track, Dual Ryde FX rear clickers, .375 Edge torsion springs, HyGear Dual rate front skid springs, SLP anti-stab kit, Powermadd handguards/mirrors, 2" Rox riser, shimmed Poo skis w/custom (homemade) ski savers, Black chrome W/S, Graphics by Arctic FX, and a grin every time I think about it! New Project: 600HO Fusion bump sled, Air 2.0 w/hi/low valves, HRM spindles, Retro graphics, .359 torsion springs.