ACDelco Rear Axle Lubricant 32 oz – GM Original Equipment 10-4091, OEM gear oil for differentials

ACDelco GM Original Equipment 10-4091 (19300457) Rear Axle Lubricant is a 32-ounce, GM-backed gear oil formulated to meet original equipment specifications for rear axle applications.

Built to the standards GM requires for replacement parts, this ACDelco rear axle lubricant is offered as an OEM-compatible option for technicians, DIYers, and fleet managers who want a factory-aligned fluid. Packaged in a convenient 32 oz bottle and made in the United States, the product is labeled Model 10-4091 and sold under the GM Original Equipment program. It’s supplied in a compact package suitable for single-axle servicing or topping off differential fluid where the vehicle manufacturer specifies this type.

What vehicles and differential types is this lubricant intended for?

This rear axle lubricant is intended for rear differentials and axle assemblies calling for ACDelco/GM-approved gear lubricants. Always check the vehicle owner’s manual or service guide to confirm compatibility with your axle design, gear ratio, and seal materials. It is a straightforward replacement for GM-specified fluids where the 32 oz container size matches service needs.

• Compatible with vehicles requiring GM-specified rear axle gear lubricant
• Suitable for passenger cars, light trucks, and SUVs with rear differentials
• Handy 32 oz bottle for one-axle top-offs or small differential fills
• OEM part numbers: 10-4091 and reference 19300457 for ordering accuracy

How should I store and handle the 32 oz bottle during a service?

Store the bottle in a cool, dry place away from direct sunlight and extreme temperature swings to preserve fluid integrity. When handling, keep the cap sealed until ready to use and avoid contamination by using clean funnels or dispensing tools when pouring into the axle housing.

• Store upright at ambient temperatures, away from heat sources
• Use a clean funnel to prevent dirt or moisture contamination
• Keep original label and part numbers visible for future reference
• Dispose of any used or contaminated fluid according to local regulations

What are the packaging and origin details I should know?

This ACDelco lubricant is shipped in a compact 32-ounce bottle with package dimensions of approximately 9" L x 4.4" W x 2.5" H. The item is manufactured in the United States and the listed package weight for shipping is about 24.6 pounds, reflecting bundled packaging or multipack shipping configurations in retail distribution.

• Package dimensions: 9" L x 4.4" W x 2.5" H for shelf/storage planning
• Country of origin: United States
• Model number: 10-4091; cross reference: 19300457
• Item packaging weight indicated at 24.6 pounds for transport records

How do I verify this is the right product for a GM service interval or repair?

Match the part number and recommendations in the vehicle’s service manual to confirm this lubricant meets the specified GM requirements. If you maintain a vehicle under warranty or perform scheduled services, use the GM Original Equipment designation and reference numbers on the bottle to ensure compliance with manufacturer guidance.

• Check owner’s manual or dealer service documentation for lubricant specs
• Compare part number 10-4091 or reference 19300457 before purchase
• Keep purchase documentation for warranty or service records
• Consult a certified technician if unsure about compatibility

Who is this for: The ACDelco GM Original Equipment 10-4091 rear axle lubricant is aimed at automotive technicians, independent repair shops, fleet service managers, and informed DIY enthusiasts who prefer OEM-aligned parts and fluids. It fits users who need a ready-to-use 32 oz bottle for single-axle maintenance, topping off differentials, or matching GM’s original equipment fluid specifications for repairs and scheduled service.