I cleaned the hinges of my doors and tailgate, the grease had attracted all sorts of dirt and turned black, tar-like and abrasive (metal shiny when I wiped the stuff off). I used a toothbrush, WD-40 and then Simplegreen and now the hinges are clean. If I want to keep them that way rather than repacking with white lithium or chassis grease, is there a clean lubricant I can use? One of the dry lubes? Silicone spray?
Great question. My preference is silicone spray, as you suggested. I'm pretty sure this one is the one I usually get for this kind of job. Apparently I'm not the only person who thinks this is a good idea, either: Home Repair Central says,
The two best choices are a silicone spray or white lithium grease. My preference it the silicone spray. It is colorless and can be used sparingly. You may have to use it more often than grease, but it is less messy and a little easier to use. Purchase a spray can of silicone spray, one that is suitable for door hardware. It should have one of those long red tubes taped to the side of the can.
Saves on mess; just be aware that you may have to apply it more regularly.
My weapon of choice for such a job is something like WD-40's White Lithium Grease: