Gear oil lubrication

Choose the gear oil category by matching your gearbox type and the manufacturer’s specification, then select the right viscosity and formulation. A common pick for many manuals is 75W-90 full synthetic gear oil, which protects well across temperature ranges. In this listing you’ll find brand-name options like Supertech and Mobil 1 that come in 75W-90 synthetic formulations, plus generic gear oils and multi-functional blends such as Mannol. If your system uses a limited-slip differential, choose an oil labeled LS; for CVT or specialty transmissions, follow the specific fluid requirements rather than a standard gear oil.

Viscosity grade determines how the oil behaves at cold starts and under heat, directly affecting protection and shifting. Synthetic gear oils offer better oxidation resistance and shear stability than mineral oils, improving long-term lubrication. In this listing you’ll find 75W-90 synthetic options like Mobil 1 and a 75W-90 full-synthetic option from Supertech, plus multi-functional and generic gear oils. Look for LS or LSD compatibility if you have a limited-slip differential, and beware that CVT fluids have their own specification separate from GL- oils.

For a daily road driver, a reliable 75W-90 synthetic gear oil from a reputable brand provides consistent protection and smooth shifting. A performance enthusiast or heavy-duty use benefits from oils with excellent high-temperature stability and, if needed, LS compatibility for limited-slip differentials. In our listing, Mobil 1 and Supertech 75W-90 synthetics offer solid everyday performance, while specialty options like LS-labeled oils address higher torque conditions. Always confirm your gearbox’s spec before choosing to ensure compatibility.

First, verify your gearbox’s exact specification and required viscosity before buying. Then drain the old oil completely, inspect seals, and fill to the manufacturer’s recommended level using a clean funnel. Replace any worn washers or seals and avoid mixing brand types unless compatibility is confirmed. Finally, dispose of used oil properly and test-drive to confirm smooth operation without leaks.

Brands like Mobil 1 and Supertech offer high-quality synthetic gear oils that perform well under varying temperatures and loads. Generic and Mannol options provide value and multi-functional blends for common gearboxes. GearSure Ep 140 represents a more specialized lubricant line for certain gear systems, so check compatibility with your transmission type. Always match the brand’s oil to your gearbox’s spec rather than mixing brands without confirmation.

Follow your vehicle manufacturer’s service intervals for gear oil changes, or every 50,000 to 100,000 km for many synthetic oils if no issues arise. Signs you need a change include hard or noisy shifts, metallic grinding, or a burnt/off-gas smell in the transmission area. Regularly check for leaks and ensure the oil level is correct after a change. Using high-quality synthetics, like those listed here, can extend intervals when used within spec.