Grease injection is standard maintenance with speedplay pedals. One
criteria for maintenance is flipping the pedal and if it rotates more
than 180D it is time for grease injection. If the injector doesn't pop
off the seal and grease extrudes through the other side of the pedal
it should be lubed, though full of grease. Speedplays have much
shorter axles than the one in the pix.