3 in 1 oil mate, get it at the hardware shop, just make sure the cloth isnt soaking, and pour some on cloth and apply to the areas you need oil placing
I use sewing machine oil its nice and light. you need to pull ya decks apart and take the spindle apart and clean it first then a couple of drops is all you need. i wouldn't start dripping oil into ya deck without doing the above though you'll fuck them.