What grease are you guys running in your glocks? I was told that the "bronze" or "gold" colored grease from the factory was supposed to remain in there and a similar or same grease is to be ran on the slide. I thought it was a shipping or packing grease and removed it during its first cleaning and replaced it with what ever gun oil I had around. So what do you recommend I put in there? Grease, oil... doesn't matter? Thanks.