John Deere makes a special gear lubricant called Corn Head Grease. The part number for a regular tube is AN 102562. It is rated NLGI grade 0. This grease is used in row unit gear boxes on corn heads. It is installed with a grease gun and is more fluid than regular gun grease. It is designed to stick to gears and lubricate pressure points and stay just thick enough to stay in the gearbox even if the seal is marginal. When I rebuild my steering box, this is the grease I will use. It is very close to the original steering gear grease.
