Rocky ground
Shear bolts protect the gearbox. Replace them with the grade the maker lists, never a stronger bolt.
Level before checking
A tipped gearbox reads wrong; set it level before pulling the plug.
FARM EQUIPMENT
Post hole digger (3-point auger) fluids and lubricants.
Gearbox oil, PTO driveline grease, and auger care for 3-point tractor post hole diggers and towable hydraulic augers.
Questions: [email protected] · Every AMSOIL link on this page carries dealer #30734402.
Fluids by compartment.
Confirm the fluid type, grade, and specifications in the post hole digger (3-point auger) maker’s manual before ordering. These examples are not a fitment result for a specific machine.
Auger gearbox
Right-angle gearboxes list a gear oil and fill level; check through the level plug with the gearbox sitting level.
Gear oil
SEVERE GEAR 80W-90 Gear Lube
SEVERE GEAR 80W-90 synthetic gear lube for compatible gear applications, including demanding towing and hauling use.
Product details Shop at AMSOIL ↗
Gear oil
SEVERE GEAR 75W-90 Gear Lube
SEVERE GEAR 75W-90 synthetic gear lube for compatible gear applications, including demanding towing and hauling use.
Product details Shop at AMSOIL ↗PTO driveline
Grease U-joints and telescoping tubes; follow the shear bolt or slip clutch guidance.
Grease & assembly lube
NLGI #2 Synthetic Polymeric Off-Road Grease
NLGI #2 polymeric off-road grease for compatible equipment components in demanding earthmoving and agricultural service.
Product details Shop at AMSOIL ↗Boom pivots and auger hub
Grease boom pivots, and coat the auger hub and pin before storage.
Grease & assembly lube
Synthetic Multi-Purpose Grease
A synthetic multi-purpose grease for compatible bearings and chassis lubrication points.
Product details Shop at AMSOIL ↗
Cleaners & protectants
Heavy-Duty Metal Protector
A heavy-duty metal protectant for compatible surfaces needing a persistent protective coating.
Product details Shop at AMSOIL ↗ORDER THROUGH INDEPENDENT AMSOIL DEALER #30734402
Ready to order, or have a question first?
Shop AMSOIL directly with Jeff’s dealer number already attached, or open a business account. AMSOIL handles pricing, checkout, and shipping. If you contact AMSOIL another way, give them dealer number 30734402.
Prefer to talk it through? Email Jeff at [email protected] with your equipment, the fluid now in use, and your approximate volume.
Frequently asked questions
What oil goes in a post hole digger gearbox?
The gear oil the digger maker lists, commonly an 80W-90 EP gear oil.
How much oil goes in an auger gearbox?
Fill to the level plug the maker identifies.
General maintenance information. Always follow the equipment maker’s requirements and the current product data. Product availability, pricing, and account terms are set by AMSOIL.
Industries that use this equipment
More farm equipment
Open a commercial account with dealer #30734402
https://www.amsoil.com/business-opportunities/get-a-commercial-account/?zo=30734402
Jeff Pittman · A1 Synthetic Oil · Independent AMSOIL Dealer #30734402 · Newport, Washington · [email protected]