Thanks for the info. I have the florabest hedge trimmer and was looking at this saw. As a Makita user I don't really want to get into a new battery ecosystem - the florabest was a one off for my partner for light trimming.
Looking at this one as it would only be for occasional use and the...
TBH I would chuck the bio oil (and cooking oil too) and use proper mineral oil. I bought one of the petrol multitools a few years ago and on the second day of owning it found oil everywhere on the shed floor. A mouse had eaten a hole in the polesaw head's oil tank to get at the oil for a meal.