It is very important to keep the blades clean. Gummed up blades perform poorly, heat up more causing quicker degradation. Gummed up blades also increase the chance of kick-back. It has been found that chemicals in woods attack carbide tips and cause premature dulling and failure. The tabletop should be kept clean and waxed.
Wood dust absorbs moisture and aids rust.
We do not like rust. All parts should be kept clean and all moving parts lubricated. Liquid lubricants collect dust so should be discouraged. I use this to lubricate gears, threaded rods, bushings and anything else where it can be applied. Respect the tool.