im not sure that it matters if you live north ,south, east or west. super tech is only a small portion castor so it may sit indefinatly with no problems. not much experience with that oil so ill take your word for it. the moral of the story is this: if your engine works fine one day and sits a month and wont run with the choke off , there shouldnt be much question where the problem is. pilot orifice simply isnt allowing fuel to pass