Not to be funny or anything like that, but worked in a oil farm for 26 years. Had everything from 1911 era steam pumps, 1940's steam turbines and actually modern day fuel oil forwarding pumps that fed directly to the boilers. I took lubrication of all the equipment seriously and never had an equipment outage due to lack of lubrication. So one could say I'm kinda anal when it comes to lubrication. We had bearings on a 200hp motor that went way over the manufacturers schedule for being taken out and replaced. They had specified some special grease just for those bearings. We used a moly type grease such as kubota specifies for lubricating all fittings. The trick was that you had to tale one of the drain plugs out and pump in fresh grease and watch the junk or old used grease come out the drain lines. Then put the plug back in place. Some guys would only pump until they got some back pressure when the drain line was full. Keep doing that and the seal lets go and next thing there is grease all over every thing. Frank