Thanks for this. Srah is a location! I did search the forum but I didn't find a specific discussion on this. I'm not sure I'm any wiser after reading the article cited - but perhaps that was the point! To make the question specific rather than general, the engine
throttle/gear selector is sticking and I thought if I lubricated in behind the control lever it might help. So the question then is- spray with grease, or oil, or none of the above?