Fresh motor oil is better than grease on a chain. Drip plenty of oil onto the chain over its entire length. Spin the pedals backwards a few turns to work the oil in. Then hold a paper towel on the chain and spin it backwards some more. The fresh oil floats the grit to the surface where the paper towel can take it away. I tried cleaning chains with solvent, drying them, and then lubricating them. They last just as long either way and what I described above is a lot faster. Grease is good if you are repacking ball bearings on the bottom bracket, the wheel bearings, and an older headset. But, a container will last decades.