This stuff-roughly WD40 with tiny particles of molybdenum disulfide suspended in it seems to work pretty well.The thin oil carrier should carry the particles between metal to metal contacts and then evaporate so it doesn't collect grunge-as much.Of course the moly is dark,and it isn't 100% grunge proof,but it is cheap and readily available.
When I think of it,I spray this on,let it sit 5-10 minutes-and then wipe all the surface stuff off.
I suspose that having some oil on the sprocket teeth might decrease wear,but it attracts abrasive crap,and that certainly increases wear.
I'm going to try the no lubrication route with new chain-cassette.
I don't think I have ever worn out a chain or cassette.I have always had multiple bikes,and was always chainging stuff-freewheels,chains-it just never happened.I would guess that the most miles I ever put on a chin-freewheel is maybe 7000 and I didn't notice any excessive wear.Of course,I usually spin,low torque high RPMS-that probably stresses everything less.
I will let you know how the no lube experiment-with frequent simple green cleaning-hosings to keep the grit down-works.Thanks.Charlie
PS -Yes,there will be higher friction losses with a dry chain-no way around that-but since I'm riding for fun-exercise-so what.I burn a few more calories.