Mobil 1 75W-90 Synthetic Gear Lube Quart Pack of 2 — Full-Synthetic GL-5, High-Temp Protection

Mobil 1 104361 75W-90 Synthetic Gear Lube is a fully synthetic gear oil engineered to protect manual transmissions and axles while improving shift quality and reducing wear.

Mobil 1 75W-90 (part number 104361) is a full-synthetic, multi-purpose gear lube sold as a convenient pack of two 1-quart bottles. Formulated to meet modern API GL-5 performance requirements and OEM specifications, it’s designed for passenger cars, light trucks, and SUVs that call for a 75W-90 viscosity. The product aims to provide reliable lubrication across a wide temperature range, helping gears operate smoothly under load and in stop-and-go or high-speed driving conditions.

What makes this 75W-90 gear lube different from conventional gear oils?

Unlike conventional mineral-based gear oils, this Mobil 1 formulation uses synthetic base stocks and advanced additives to maintain film strength and thermal stability. That improves protection against scuffing and wear during high-load or high-temperature operation.

• Full-synthetic base stocks for stable viscosity at extreme temperatures
• High-pressure additives to resist gear surface damage
• Oxidation inhibitors to extend service life

How does this gear lube affect shifting performance and drivetrain noise?

The lubricant’s friction characteristics are balanced to promote consistent, smooth shifts in manual transmissions and reduce gear rattle in differentials. While formulation can vary by application, many users notice crisper shifts and quieter operation compared with older, worn or generic oils.

• Stable film reduces metal-to-metal contact during shifts
• Improved lubricity helps minimize chatter and whine
• Even performance from cold start to operating temperature

Is this product compatible with my vehicle’s specifications?

Mobil 1 75W-90 is intended to meet the common API GL-5 spec and is suitable for many modern differentials and manual transmissions that call for a 75W-90 synthetic gear oil. Always consult your owner’s manual or OEM service data to confirm compatibility and required performance standards.

• Meets API GL-5 performance levels for hypoid gears
• Suitable for passenger cars, light trucks, and SUVs specifying 75W-90
• Check manufacturer recommendations for additive system or limited-slip compatibility

How should I use and store this Mobil 1 gear lube?

Use the product as a direct replacement for specified 75W-90 oils during scheduled differential or transmission service. Store bottles upright in a cool, dry place and keep containers sealed to prevent contamination and moisture ingress.

• Follow vehicle service intervals and fill quantities from the manual
• Keep bottles sealed; avoid dirt and water contamination during service
• Dispose of used oil and containers according to local regulations

Who is this for: Mobil 1 104361 75W-90 Synthetic Gear Lube (1 Quart, Pack of 2) is aimed at DIY mechanics, professional technicians, and vehicle owners who want a reliable, synthetic GL-5 gear oil for manual transmissions and differentials. It suits drivers of passenger cars, light trucks, and SUVs that require 75W-90 viscosity and prefer a high-performance synthetic formula for improved thermal stability, wear protection, and shift feel. If your vehicle mandates a different spec or requires a specific limited-slip additive, verify compatibility before purchasing.