so you mean
"Vacuum wipers aren't known for Herculean torque, but you can grow fond of the hissing and flip-flop sounds vacuum motors make. Periodically, squirt some motor oil into the wiper-motor air intake (a pinhole near the valve-tripping mechanism, not the rubber hose going to the intake manifold) as the wipers are operating. This will help to seal the moving paddle to optimize power.
"a pinhole near the valve-tripping mechanism"
I've got a hard time understanding what that should look like..? Could you explain it in easier english? sizes? what side?
