You can but would suggest that you don't.
Been there tried it and even in a low humidity section of the US still ended up stripping it off and oiling. Biggest challenge was repairing the finish with the parts installed when they are clear. If its on oiled parts then you just deal with the rust, recolor if needed and oil again. Spraying clear runs the risk of the overspray going when you don't want it and you need to strip the whole part since blending isn't going to work well IMHO
Plenty of testimonies in other threads if you've read the threads you saw them.