Very good Sandy!!! Stainless caps is the way to go. Yeah they are about $6, however it's a one time cost versus a bunch of the cheapies!! I'm with Conner on not using too much grease, before I tow long distances I pull the rubber cover on the Posi Lube caps, have a look for no water, pump grease just until it squeezes out of the outer bearing and done! No more grease is needed.
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