Cottered Crank Exchange

Hey all, need a little advice here. I am changing the cottered cranks on my 28"
uni. I have, and will use the proper puller / installer but am wondering if I
should lubricate the cotters with white lead or or any suitable lubricant to
facilitate good seating. I don’t have a problem with loose cranks now, and don’t
want to start one by being careless with this procedure. Any and all advice from
the experienced would be greatly appreciated. Mike