I use gapless rings to my advantage. Because they leak so little, they allow me to use a sealed pcv system to draw a vacuum in the crankcase, which in-turn allows me to get away with 12lb oil rings to pick up a little power/mileage. My setup draws 15"Hg crankcase down the hiway, without help from a vacuum pump. I do have an electric pump for backup when I spray, but it's not needed even for the occasional WOT NA blast on a backroad.