Don't Use WD-40 as Garage Door Lubricant It is best to use either a 40-weight, non-detergent oil, which you can buy at any auto parts store, or a mixture of wheel-bearing grease and 10W30. The reason these substances work better at lubricating garage doors is that they are thicker, so they will stay where you put them. Nov 30, 2018
The best type of lubricant is either a lithium grease or a silicone spray. A lithium grease product will form a moisture-reducing barrier and protect against friction. A silicone spray will have these qualities and will also help protect the components of your garage door.