Lucas Oil Heavy Duty Gear Oil 85W-140 is a conventional SAE 85W-140 gear lubricant built for high-load differentials, towing, and racing use. It carries a limited-slip additive along with anti-wear and lubricity agents that help protect ring and pinion gears under heat and heavy stress.
- Type: Conventional heavy duty gear oil
- Grade: SAE 85W-140
- Additives: Limited-slip additive, anti-wear and lubricity agents
- Application: High-load differentials, towing, racing
- Container: 1 Quart
- Sold as: Case of 12 (12 x 1 Quart)
- Part number: 10042
FAQ
What viscosity is this gear oil?
It is an SAE 85W-140 grade heavy duty gear oil.
Does it work in limited-slip differentials?
Yes. It includes a limited-slip additive, so it is suited to limited-slip differentials as well as standard units.
Is it synthetic or conventional?
It is a conventional gear oil.

