Do understand that shoes/cleats have the aspect of being the head in the sand. Unseen, out of sight but still in your world only to resurface later. depending on the choices you make/act on this resurfacing might be frustrating. Like using a spray wet oil on your cleats which collects grime causing wear to the plastic bits of those expensive pedals. By the same token cleats which are neglected can corrode in place on your shoe's fittings. The recommendations of pedal/cleat surfaces lube I've been told are dry, wax, silicone ones.

I have used Speedplay X pedals since year 1 they came about. They have known tendencies to trap grime in the spring pockets. Speedplay suggests a wax lube (White Lightening). I have run mine dry for every mile of the, close to, 50,000 miles I've been with them. I have had to wash out th cleats a number of times but if I had waxed them this wouldn't have been much different. And if I had oiled them... Andy