Spray the affected areas of the track with the WD-40 Multi-Use Product, then scrub the rust away with a brush. Next, lubricate all the moving parts with WD-40 Specialist White Lithium Grease.
WD-40's noise-eliminating ability might make it tempting to use it on car belts that have become an embarrassment at stop lights or in parking lots, but is it safe to spray WD-40 on a noisy car belt?