I do not have an HDZ but do have a Shark. I use Super Lube Dri-Film Lubricant. The lubricant is dry and does not attract dust and dirt. It is slightly moist when sprayed but evaporates the carrier and becomes dry with a white teflon mist left behind. I have never had any trouble with the linear rails being dirty. Occasionally I clean the faces of the bearings because they tend to collect dust over time.