My dash has said "lo Oil" twice in 18 months, once was at about 3 months on almost flat ground 1000ks from home the day after doing 8 hours in 45 degree heat. It lasted for about 5 secs, I did all the usual checks and nothing was amiss so I ignored it. And the second time was about 4 weeks ago parked on a hill whilst bouncing around the farm. Didn't even bother lifting the dip stick that time, it went off and never came back on despite spending the next three hours scooting around the hills.