Best Gear Oils of 2026

Castrol Transmax Axle Oil is a versatile solution for various vehicles, compatible with API GL-5 performance requirements. It is specifically designed for use in differentials and final drives, making it ideal for both passenger cars and commercial vehicles. This oil is approved by MAN and ZF, ensuring its reliability in demanding applications such as off-road and agricultural equipment. With Smooth Drive Technology, the oil adapts to changing conditions, providing a smoother driving experience and enhanced protection for your vehicle.

The Comma EP80W-90 Gear Oil is a semi-synthetic lubricant specifically designed for synchromesh and constant mesh manual gearboxes. This gear oil meets the specifications for applications requiring an 80W-90 or 85W-90 API GL-4 oil, ensuring optimal performance in your vehicle. With a large 5-litre bottle, you can conveniently maintain your gearbox without frequent refills. By using this product, you can enhance the longevity and efficiency of your gearbox, providing a smoother driving experience.

Mannol Extra 75W90 is a versatile, energy-saving synthetic gear oil designed for various manual transmissions. It is ideal for synchronised manual transmissions, ensuring smooth operation even under high loads. This oil is also suitable for differentials and steering equipment, protecting against excessive pressure and shock loading. With its improved resistance to pressure build-up, you can enjoy reduced wear on differential gears and pistons, enhancing the longevity of your vehicle's transmission system.

Castrol Transmax 80W is a high-quality gear oil that meets API GL-4 standards, making it suitable for various applications. Its mineral oil base contains anti-wear properties that help extend the life of your vehicle's components, providing peace of mind during use. The oil's high thermal stability protects against deposit formation and oil thickening, ensuring consistent performance and longevity of your transmission. Additionally, it is approved for use in Mercedes-Benz vehicles and ZF manual transmissions, offering versatility and reliability for your needs.

Castrol Transmax 75W-90 is a fully synthetic transmission fluid designed for most passenger car manual transmissions. It features Smooth Drive Technology, which helps to extend the life of your transmission, ensuring it functions optimally for longer. If you experience low temperature shiftability issues, this fluid can be an effective solution. Additionally, the active control molecules within the fluid adjust their friction levels automatically, providing you with a smoother driving experience, regardless of the pressure or speed conditions.

Castrol Transmax 75W-90 is a 100% synthetic lubricant designed for most automotive manual gearboxes. Its Smooth Drive Technology™ ensures smoother gear changes, enhancing your driving experience. With excellent synchronization capability, it helps to prolong the life of your gearbox components. The oil also boasts exceptional cold flow properties, allowing for easier shifts in low temperatures. Additionally, its high shear resistance maintains consistent viscosity throughout its service life, reducing noise and contributing to a quieter operation.

The Comma MVP75801L Fluid is a fully synthetic manual transmission fluid designed to offer excellent protection for bearings and gears. This fluid ensures proven synchroniser performance, which helps in smoother gear changes, adding convenience to your driving experience. It is recommended for various vehicle brands, including BMW, Vauxhall/Opel, and Honda, making it versatile for your needs. With a specification of API GL4, you can trust this fluid to meet high standards of quality and performance.

LIQUI MOLY Gear Oil is a mineral low-viscosity hypoid gear oil, designed for reliable performance in various vehicle transmissions. It ensures smooth operation even under challenging conditions and significant temperature changes, providing you with peace of mind during use. Ideal for high-load motor vehicle transmissions, particularly those with hypoid gearing, it helps maintain the efficiency of your axle drives. By adhering to the viscosity class recommended by your transmission manufacturer, you can be confident in its compatibility and effectiveness, ensuring optimal performance.