Originally Posted by
HelpSingularity
Just dribble some kind of oil into the freewheel. Just set the wheel on the side and spin the freewheel. You'll see the part in the middle that does not move while the cogs are spinning. At the interface dribble some oil in there. I always use Phil's Tenacious Oil but I'm sure just about anything is fine.
WD40 is fine to loosen and clean things out but not as a lubricant. Use something like (or equivalent) a 30wt oil.
Quoting for emphasis. If the only problem is sluggish freewheeling, don't bother buying a freewheel puller.
Just drip a few drops of medium-weight oil in at the outer edge of the lock ring while the wheel is horizontal. That's all it will take to dilute the gummy residue (that used to be oil) within the freewheel mechanism. Then spin the wheel while holding the wheel horizontal and the freewheel and the axle stationary to get the fresh oil to penetrate fully. It's always satisfying to feel the resistance in the freewheel mechanism disappearing.