[Closed] Crank Bros pedals - how often do they need greasing?

i use pace RC-7 grease (just because that's what's in the grease gun) and do them every 5 or 6 rides

I have some year old eggbeaters that I greased for the first time last month.

Regularly. I love mine but you do need to keep an eye on them. I tend to only do it about twice a year tho, without any major issues.
When they wear out, the pedal just comes off the spindle - usually when you're in the middle of nowhere!
Easy to check tho: grab the cage and pull it away from the crank. If there's any play, get a bearing replacement kit (£13 from CRC) and replace. Quite easy to do - a satisfying way to while away and hour on a wet Saturday afternoon 🙂

i've pulled two off the axle, one half way through a lap of 24/12

not pleasant