I know there's a few threads on this already. I tried multiple types of lube, oil, etc and they work for a while but it comes back. I realized that the roller would work its way all the up which didn't allow it to rotate freely. This causes the noise.
I tried a rubber washer to see if it would work well to stop that contact. I bought some plastic ones to replace the rubber one with if it worked but worn out. It's been two months and the rubber one is still there. I don't think I would try anything else as this takes all of 10 seconds to do.
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The rubber washer just slips over the post. You may have to tap the roller down so it can fit. It's a quick and cheap fix. Worth a try if you're tired of spraying crap on the hinge.