Mobil 1 75W-90 Synthetic Gear Lube GL-5 — 2-Quart Pack (2 x 1 qt), High-Temp Wear Protection

This fully synthetic 75W-90 gear oil from Mobil is engineered to reduce wear, control friction, and help maintain smooth shifting in modern drivetrains. It blends synthetic base stocks with a robust additive package to resist shear and thermal breakdown, making it suitable for passenger cars, light trucks, and performance vehicles where a GL-5 viscosity is specified. The pack of two 1-quart bottles gives you convenient refill capacity for service intervals or multiple vehicles.

How does this gear lube support drivetrain longevity?

Mobil 1 75W-90 uses stable synthetic base oils and targeted anti-wear additives to form a protective film on gear surfaces. That film helps reduce metal-to-metal contact during high-load operation, which can limit surface fatigue and pitting over time.

• GL-5-rated chemistry compatible with hypoid gears and heavy-load environments
• High film strength to resist extreme pressure loading
• Shear-stable formulation to retain viscosity under stress

Will it improve shifting and cold-start performance?

The 75W cold-grade rating means the oil flows more readily at lower temperatures than higher-viscosity gear oils, which helps quicker lubrication during startup and can aid smoother shifting. At operating temperature the 90-grade hot viscosity maintains a consistent film to support gear engagement.

• 75W cold-flow for faster circulation on startup
• 90 hot-viscosity for stable protection under load
• Helps reduce shift clunk and wear during temperature changes

Is this compatible with my vehicle and seals?

Mobil 1 75W-90 is formulated for GL-5 service and is appropriate where manufacturers call for GL-5 synthetic gear oil. It’s generally compatible with common elastomers used in gear and differential assemblies, but always check your owner’s manual or service guide for the exact spec required.

• Designed to meet GL-5 performance requirements
• Suitable for many passenger cars, light trucks, and SUVs
• Confirm vehicle spec or OEM recommendation before use

How much product do I get and how is it packaged?

This listing contains two 1-quart (946 mL) bottles—ideal for topping off a differential, filling a manual transmission during a service, or keeping a spare bottle on hand. Bottles are labeled and sized for easy pouring and storage in a garage or service bay.

• Pack of 2 bottles, 1 quart each
• Clear labeling for quick identification of viscosity and spec
• Convenient pour spout design for minimal spills

Who is this for: Mobil 1 75W-90 synthetic gear lube is suited to DIY mechanics, professional technicians, and vehicle owners looking for a reliable synthetic GL-5 oil for manual gearboxes, differentials, and hypoid gears. Choose this product if your vehicle’s service specifications call for a 75W-90 GL-5 synthetic, if you want better low-temperature flow and robust high-temperature film strength, or if you prefer the predictable performance and extended service characteristics of synthetic lubricants. If your manufacturer requires a different spec (for example GL-4 or a specific OEM-approved fluid), consult the manual before substituting.