Best Castrol Gear Oils of 2025

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.

Castrol Transmax Fluid is a fully synthetic transmission fluid designed for most passenger car manual transmissions. With Smooth Drive Technology, it helps extend the life of your transmission by providing better lubrication. The fluid is effective in addressing low temperature shifting issues, ensuring a smoother driving experience even in colder conditions. Additionally, the active control molecules in the fluid adapt to varying pressures and speeds, offering you enhanced protection and performance on the road.

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.

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 AXLE 75W-90 is a full synthetic rear axle fluid that provides exceptional protection for your vehicle. It is suitable for various brands such as BMW, and is particularly beneficial when driving under challenging conditions like stop-start traffic or towing. The Smooth Drive Technology ensures smoother axle operation, reducing noise and enhancing your driving comfort. With its approval from leading manufacturers, you can trust that this fluid is designed for optimal performance in your vehicle's final drives.

Castrol Transmax 75W Fluid is a full synthetic transmission fluid designed for conventional manual and "dry clutch" transmissions. It features Smooth Drive Technology, which helps extend the life of your transmission by providing superior protection. With its low viscosity formulation, you can enjoy potential fuel economy benefits without compromising on wear protection. This product is also approved for various Ford and Volvo models, ensuring compatibility and performance for your vehicle.

Castrol Transmax Gear Oil is a fully synthetic hypoid gear oil, ideal for both conventional and limited slip differentials. It features Smooth Drive Technology, which means the oil adapts its friction levels based on pressure and speed, ensuring a smoother driving experience. It's suitable for high-performance vehicles, including BMW M Series and Mercedes Benz AMG models. Additionally, it reduces noise and vibrations in the axle, providing a more comfortable ride for you.

The Castrol Bundle Gear Oil is a semi-synthetic solution designed for modern five and six-speed gearboxes. It is recommended by Comma for specific applications requiring a 75W-90, 80W-90, or 85W-90 API GL-4 oil. This compatibility ensures that you can maintain the performance and efficiency of your vehicle's transmission. With a generous 5-litre bottle, you will have ample supply for multiple changes, making it a convenient choice for regular maintenance.

Castrol Transmax 75W-90 is a versatile gear lubricant designed for high temperature stability, ensuring smooth gear shifting in all conditions. This product is suitable for both synchronised manual transmissions and final drives, simplifying your inventory needs. With excellent wear protection, it helps extend the life of your vehicle's components while reducing maintenance costs. By using this single product for various applications, you can avoid the hassle of misapplication and enjoy the convenience it offers.