Amsoil Complete Synthetic Changeover Kit for the Military HUMVEE - All Lubricants

Here’s your complete Changeover Kit with everything you need for a Military HMMWV (Humvee) using AMSOIL products - you need to cover the engine, transmission, transfer case, differentials, geared hubs, and chassis grease points. This kit provides enough fluid for a dry fill (complete system flush) rather than just a simple service drain.

Here’s the  list for one complete kit, including the specific AMSOIL product and the quantity needed.

1. Engine Oil

• Product: AMSOIL Heavy-Duty Synthetic Diesel Oil 15W-40 (Product Code: ADP)
• Alternative: Signature Series Max-Duty 15W-40 (DZF) for maximum protection.
• Quantity: 2 Gallons (8 Quarts)
• Notes: The 6.2L and 6.5L Diesel engines typically hold 8 quarts.

2. Transmission, Transfer Case & Power Steering Fluid

• Product: AMSOIL Signature Series Multi-Vehicle Synthetic ATF (Product Code: ATF)
• Why: This fluid covers the Dexron III specification required for the older 3L80 (TH400) and 4L80E transmissions, as well as the transfer case and power steering system.
• Quantity: 5 Gallons (20 Quarts)
• Breakdown:
• Transmission: ~14 quarts (Dry fill capacity for 4L80E).
• Transfer Case (NP218/NP242): ~2.5 to 3 quarts.
• Power Steering: ~1 quart.
• Total needed: ~18 quarts. (A 5-gallon pail or five 1-gallon jugs is the perfect size).

3. Differentials & Geared Hubs

• Product: AMSOIL Severe Gear 75W-90 (Product Code: SVG)
• Why: The HMMWV uses AMC 20 differentials and portal geared hubs that require GL-5 gear oil. 75W-90 provides better flow and protection than the original 80W-90.
• Quantity: 8 Quarts (2 Gallons)
• Breakdown:
• Differentials (Front & Rear): ~5 quarts total (approx. 2.5 qts each).
• Geared Hubs (4 total): ~2 quarts total (approx. 1 pint/0.5 qt per hub).
• Total needed: ~7 quarts. (Buying 2 gallons/8 quarts leaves 1 quart for spares/spillage).

4. Chassis Grease

• Product: AMSOIL Synthetic Multi-Purpose Grease NLGI #2 (Product Code: GLC)
• Quantity: 3 - 4 Tubes
• Notes: The HMMWV is famous for having nearly 100 grease fittings (ball joints, tie rods, drive shafts, control arms). 3 tubes should cover a full chassis service, but 4 is safer for a "first-time" lube on an old vehicle.

Summary Checklist for 1 Kit: