I was the one recommending John Deere Corn Head Grease way back when. It is closer to a solid at room temp. If you slopped some on a wall, it would eventually run down the wall. It becomes more liquid at higher temperatures and with motion.
I may have come across a product that may even work better than corn head grease. It is called Sprinkler Lube and is exclusively marketed through Reinke Irrigation dealers. It is described as a thixioplastic lubricant, which is a fancy way to say it is a near solid in absence of motion, but becomes a liquid in the prescence of motion. We use this product in the wheel gear boxes on irrigation sprinklers. These gear boxes are a 50:1 (or 52:1, depending on manufacturer) and are responsible for carrying a span full of water (up to 9,000 lbs) through a muddy field. The demo that sold me compared two identical gearboxes that had all input and output seals removed and were reassembled. One box used 85w-140 oil and the other used Sprinkler Lube. The 85W-140 box had oil running out of every shaft area, while the Sprinker Lube was only just slightly damp around the shafts.
I think I'll give this a try after I get my 9" uder the 51. I am also considering using the Sprinker Lube in the rear end on my 42, since the seal surface is grooved and I cannot get a speedy-sleeve to fix it.
