I like the STA-BIL and have used it for many year's I always use it in everything that isn't started often .You should also start engine's at least every two weeks .Get the transmission and rear end up to operating temps to keep seals from leaking.Drive it if possible.Octane in fuel lowers the older it gets I use the 91 in most everything anyway mowers , chain saw's to my race car's.I have no carbon build up from this also.
