CASTROL TRANSMAX MANUAL TRANSAXLE 75W-90
Castrol Transmax Manual Transaxle 75W-90 is a full synthetic transaxle fluid that delivers longer transmission life and high performance for modern passenger car manual transmissions. As a transaxle fluid designed to provide enhanced engine protection (EP) compared with conventional fluids, it delivers excellent shift quality, especially at low temperatures. Fluidity, even under extreme pressure or at low temperatures, improves driver comfort when switching gears, and the emphasis on engine protection leads to longer lifespans for crucial engine components.
Castrol Transmax Manual Transaxle 75W-90 delivers excellent anti-wear/EP performance not only at low temperatures, but also offers better protection at start-up than comparable fluids. Because it resists engine deposits, this product improves transmission cleanliness, prolonging the life of both the transmission and the lubricant. By extending oil drain intervals and extending component life, Castrol Transmax Manual Transaxle 75W-90 remains more cost-effective than other products.
Suited for a range of complicated applications, Transmax Manual Transaxle 75W-90 maintains good high-temperature stability while continuing to reduce gear stiffness at cold temperatures, making it effective under a range of performance conditions. Trust Castrol Transmax Manual Transaxle 75W-90 to deliver stronger performance, excellent shift quality and longer oil and component life in any application that calls for a fully synthetic transaxle fluid.
Product Performance Claims
- API GL-4+
- Approved - VW 501 50
- SAE Class according to J306 pre 1998
CASTROL TRANSMAX MANUAL TRANSAXLE 75W-90 WAS PREVIOUSLY SOLD UNDER THE NAME OF CASTROL SYNTRANS TRANSAXLE 75W-90.
Why Choose Castrol?
Castrol Transmax Manual Transaxle 75W-90 is a fully synthetic manual transmission fluid engineered to meet the complex demands of modern transaxles. A full synthetic transaxle fluid designed to provide enhanced EP performance compared with a conventional GL-4 fluid, Transmax 75W-90 is recommended for use in many vehicles from leading manufacturers.
This premium-grade oil delivers excellent synchroniser performance, thermal stability, and protection across a broad range of temperatures. It has been co-engineered with leading vehicle manufacturers to provide smoother shifting in colder conditions and strong wear protection under high load, making it a trusted solution for both everyday driving and more severe operating conditions.
Designed for use in manual transmissions and transaxles where API GL-4 performance is required, Castrol Transmax Manual Transaxle 75W-90 is especially well-suited to vehicles requiring high-performance synchroniser function. Its low-temperature fluidity helps reduce shift effort during cold starts, while its high film strength offers lasting protection to gear components under load. These qualities make it a strong choice for modern passenger cars, light commercials, and high-torque applications with front-wheel-drive layouts.
With excellent high shear stability, this fluid resists viscosity breakdown even under severe stress, maintaining optimum gear protection and lubricant performance throughout extended service intervals. Its oxidative stability reduces the build-up of deposits, ensuring clean transmission internals and reliable long-term performance.
For workshops, fleet operators, and individual vehicle owners seeking a fluid that combines manufacturer-tested compatibility with synthetic durability, Castrol Transmax Manual Transaxle 75W-90 offers both peace of mind and operational efficiency. By enabling temperature reduction in operation, Transmax Manual Transaxle 75W-90 extends oil and component life and aids fuel efficiency, emissions reduction and transmission cleanliness. To enhance drivetrain reliability and performance, explore our related gear oil and driveline fluid categories, or pair this product with Castrol’s engine oils for a comprehensive solution.
Why Choose Broughton Lubricants?
Broughton Lubricants has over 100 years' experience in supplying lubricants, and is the UK's only Castrol Ambassador Distributor for both the industrial and automotive product lines. However, our approach is about more than just supplying Castrol products. We aim to be a technical partner for our customers, by offering advice, insight and support.
The lubricant market changes regularly, and it can be difficult to find the right product. This is a particular problem when products are discontinued, upgraded, rebranded or otherwise removed from the market. Thanks to our longevity, we can help you to find a direct replacement where one exists, or advise you on choosing a suitable replacement based on your technical specifications and performance criteria. Whether your priority is extending oil and component life compared with a conventional fluid, delivering excellent transmission cleanliness, prolonging protection and extending drain intervals, or driving higher performance without losing enhanced EP performance, we can help. Call us for expert recommendations based on your technical requirements or for guidance on finding a suitable product where the manufacturer's recommended lubricant is no longer available.
If you want extra support to optimise operational efficiency, our oil testing service provides detailed insights into lubricant condition and performance over time. Whatever you want to achieve in terms of performance, longevity or protection, Broughton Lubricants is here to help. Call our team of technical experts on 03300 555 109 or use our online enquiry form to request a call back and find out more about how we can help.