Any quality silicone spray will do. I personally use Valvoline

I do it monthly as not to gum up the bottom of the inside of my door (it will leak out onto your cladding if you use too much). I do it with the windows down, using the red straw to shoot the spray up and down the tracks (rubber insert/track). Immediately rolling the windows up and down a few times to make sure it smears all over...

-biju.