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Product Code: 1829G
Castrol Transmax Universal 75W-90 is a high-performance, multipurpose gear lubricant developed for use in synchronised manual transmissions, final drives and differentials. It offers enhanced protection where API GL-4 or API GL-5 lubricants are specified, and is designed to provide effective wear protection and smooth gear shifting.
This versatile transmission lubricant offers a practical solution for maintaining drivetrain reliability and reducing maintenance requirements. A key advantage of Castrol Transmax Universal 75W-90 is its ability to lubricate both manual transmissions and axles, which reduces the need to stock multiple specialist gear oils. Its optimised synchroniser performance promotes smooth gear changes across a wide range of operating temperatures, which helps to maintain consistent gearbox operation.
The lubricant provides excellent protection against wear that can extend component life, extend drain intervals and minimise maintenance costs. Its high-temperature stability supports reliable performance in demanding operating conditions, which makes it an ideal choice for a range of commercial vehicles and passenger cars where it meets manufacturer specifications.
This product was previously called Castrol Universal 75W-90.
Castrol Transmax Universal 75W-90 is a versatile, multipurpose gear oil and final drive lubricant that delivers superior performance and protection for synchronised manual transmissions, final drives and differentials. Developed for applications requiring API GL-4 or API GL-5 performance, this 75W-90 transmission lubricant provides an effective solution for protecting essential drivetrain components while supporting smooth gear shifting and long-term operational efficiency.
Combining excellent wear protection with high-temperature stability, Transmax Universal 75W-90 has extended drain potential, requires limited maintenance, and offers multiple applications, which make it an ideal product for applications where both manual gearboxes and final drives require lubrication.
For workshops, maintenance teams and businesses managing multiple lubricant requirements, this versatility offers several practical advantages. Using one appropriate lubricant across different drivetrain components can simplify stock management, reduce the number of lubricants you need to hold in stock, minimise the potential for product misapplication and make routine maintenance more straightforward.
Key Benefits of Castrol Transmax Universal 75W-90 include:
Maintaining smooth transmission performance is an important consideration when selecting a manual gearbox oil. Castrol Transmax Universal 75W-90 features optimised synchroniser performance that is designed to support smooth gear shifting across a wide range of operating temperatures.
Synchronisers play an important role in manual gearbox operation, helping gears engage smoothly during changes. Castrol's formulation is designed to deliver the lubricant performance required by these components, supporting consistent gear shifting during operation. This combination of lubrication performance and shift quality makes Castrol Transmax Universal 75W-90 a practical choice for users seeking a multipurpose manual transmission oil that also provides protection for final drives and differentials.
Wear protection is essential for maintaining the operational reliability and service life of transmission and axle components. Gears and other moving parts are subjected to demanding mechanical conditions during operation, making the correct lubricant an important part of preventative maintenance. Castrol Transmax Universal 75W-90 provides excellent wear protection that protects components, extends equipment life and reduces maintenance costs. Its protective performance is particularly beneficial where maintaining the condition of drivetrain components is a priority.
For other drivetrain lubrication requirements, explore our range of Castrol gear oils, including Castrol Transmax manual transmission oils and Castrol axle oils.
Broughton Lubricants is the UK's only Castrol Ambassador Distributor for both industrial and automotive product lines, and we offer specialist lubricant knowledge and technical support. Selecting a suitable transmission lubricant means identifying the correct viscosity grade, the API performance classification, gearbox design, synchroniser requirements and any additional manufacturer requirements. Our team specialises in Castrol products, performance characteristics and technical specifications, so we can advise you on the best lubricant for your needs.
With a long-established history in the lubricants industry, our experienced team can identify direct replacements or suitable alternatives to discontinued or rebranded products, which is a key advantage thanks to the rapid pace of transformation in the lubricant industry.
Whether you need assistance selecting the correct manual transmission oil, identifying an appropriate axle lubricant or finding a replacement for an obsolete specification, our experts are here to help. Call Broughton Lubricants on 03300 555 109 for tailored product recommendations and technical guidance, or get in touch via our online enquiry form.