Can I ask a clockmaker a silly question please? In the bottom of a box of junk ,that I bought about 20 years ago, Laid in rusty water, I have found a wind-up watch. This must have laid about 20 years outside in all weathers. I've cleaned the outside with WD40 and it looks OK and little wear. It winds up and runs but only for 10 hours. I would like to clean and lube and see what happens. It's a swiss make but of no value, so I thought it would be a good practice piece. Any suggestions eg. lube to use. Thought of using white spirit as expect it will be a one off job. Apologies if of-topic .