I'm hardly an expert, but my thoughts: Worst case is the stuff gets sticky over time. Cutting oil certainly isn't formulated with long term stability in mind, so that probably will happen at some point. The oil you used is probably rather light, I guess if the slow times run alright it's not too viscous. The other lubricant that's supposed to be used would be a type of grease. Oil will probably lubricate sufficiently to avoid strong wear is the camera isn't used very heavily, but it might run away.
If you decide to leave it and air it out, protect from dust!