I had a spell of concern with my SIG last year - and having used on that Tetra grease and Militech grease, found that the grease was getting ''crud-bound'' - sufficient to slow the slide with drag such that std pressure ammo was giving trouble. +P was OK. Forget round count but it was not a huge thruput.
I ''retired the gun for a while while I analyzed the trouble - switching to SW99 and R9. I satisfied myself that grease was indeed a problem. SIG said I may need more break-in but - that was not it.
I am very concerned with R9 that having SS running on Al allow, that lube is good - but must confess I am now more inclined to lube with Militech1 or Mobil 1 and strip/clean/relube way more often.
I am confident that there will never be a gun running dry - and also feel happier that no crud ''thickening'' effect with grease will be experienced.
I respect Karl and Eric's recommendation re superlube but still feel better with my grease-free approach and relube often - minimal lube i might add, not a bath! Less is more and adequate if frequent.
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Bill - moved this to maintenance forum