I was cleaning my car from the inside and wanted to polish the interior. So I found a can of silicone spray labeled as "Dashboard Wax." First I Vacuumed the interior and the cleaned the dashboard and doors with a clean damp rag. I let it dry for 10 minutes and then sprayed the silicone spray and it made it brand new and very shiny. But I noticed it was very slippery. I checked my AC air vents and before they were stuck. After spraying the silicone spray they became very free and brand new. It was crazy. Before my AC vents would not budge but now they were like a brand new car and very easy to move. So I looked up silicone spray and it is a dry lube. It lubricates but it does not get dirty with dirt or sand. But if you use lithium or tire grease or WD-40 it gets dirty very fast and attracts dirt and instead of lubricating it destroy the thing. But silicone spray is amazing it lubricates and repels dirt and dust. So after spraying silicone spray even if you throw a bucket of sand onto the surface it will not stick and it will repel it. Amazing. So more to the story, my two door locks on the passenger side were not closing fully. Sometimes they closed and sometimes they were slightly open, leaving the door lock open sometimes. So I opened the door panel and sprayed the silicone spray on the door lock rod, hinge, and mechanism. Now the locks are fixed too and they fully close like brand new. Its a an amazing product. Its cheap too. A can cost only 10 bucks.