Outdoor:
I have used WD-40 in the past. It works great but is a real pain to do after every hole. Here is what I do now...Immediately after I punch a hole, I pull the auger out and as soon as it is out of the water I mash the throttle down to sling off any water that is on the blades. I then lay the auger on the ice sideways. I never bore a half hole. Maybe that will help...works for me.