What was found
OKC FLIGHT 4182 ON CLIMBOUT OF DEN, NR 2 ENGINE VIBRATION AT 1.3, CLIMBING THRU 26K FT VIBRATION WENT TO 1.8 AS PER CHECKLIST, REDUCED POWER ON NR 2 ENGINE, VIBRATION BACK IN GREEN AT 1.6. MAINTENANCE COMPLIED WITH TASK 72-21-02-200-803-A01, PART 2, FAN BLADES LUBRICATION WITHIN 10 FLIGHT HOURS.