The right oil

I'd be a little bit cautious using mineral oil on brass, it could cause a chemical reaction with the brass and leave you with a blue gunk all through the razor. I use fishing rod oil.
 
Sewing machine oil, or oil used on the blades of electric hair trimmers, those are mineral oil. Any gun or fishing reel oil will do, Gillette didn't say to use anything, so it's up to you.
 
I'd be a little bit cautious using mineral oil on brass, it could cause a chemical reaction with the brass and leave you with a blue gunk all through the razor. I use fishing rod oil.
Electric motors, starters, alternators, etc. use brass or bronze bearings, bushings, and thrust washers, and mineral oil is the standard lubricant for those without problems.
 
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