I am not too knowledgeable on the subject, but this information is impossible:
Is it an oil-less air compressor or one that relies on parts needing oil? Why am I asking this? Well, if it needs oil lubricant, starting it up after ten years may be very detrimental to the pieces that make it run. Also, do you have a filter on the hose/tank? I assume that pieces or the tank itself *COULD POSSIBLY* oxidise, and spit some of that stuff out, which would be bad also. Other than all of this, just wait for some pros to talk about this stuff, or contact a retailer of air compressors to see what they say. I hope this helps
Many thanks for your info, how do I know if it is type of oil lubricant? I think it is better I post some photo here for a clear picture. Too bad the retailer is no longer here
please tell me how to post a photo here, thanks.
Mod Edit (Red): Please don't double post when you can edit.