FIRST! We do not suggest a grease gun be used ever on end units. We suggest you leave them alone until 2 to 5 years and then repack them totally. Putting in new seals at that time. We suggest a light to no lithium grease. The grease has been listed on these pages before. We use Red Valvoline at BCB.Last edited by Bass Cat Boats on March 27th, 2009, 4:15 pm, edited 1 time in total.