Manual transmission and gearbox oils for modern cars — GL-4 gearbox fluids and GL-5/LS gear oils across 75W-80, 75W-90, 75W-110 and 75W-140 grades. The right spec matters: most manual gearboxes want a GL-4 manual transmission fluid, hypoid differentials need GL-5, and limited-slip units need an LS oil to stop clutch chatter. We stock Millers XF Premium MTF (75W, 75W-80 and 75W-90) and Trident Professional MTF 75W-90 for gearboxes, plus competition-grade CRX NT+ and CRX LS NT+ (limited-slip) gear oils in 75W-90, 75W-110 and 75W-140. Looking for an automatic? See our ATF & Automatic Transmission Fluid section. Not sure which your car needs? Ask us. Irish stock — free delivery over €150, same-day dispatch before 2pm.
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Millers Trident Professional MTF 75W-90 is a professional manual gearbox oil for modern transmissions requiring a 75W-90 grade. It offers excellent low-temperature flow and a stable protective film to keep gears protected under load, for smooth, reliable shifting. Available in 1- and 5-litre.
Millers XF Premium MTF 75W is a premium fully synthetic manual gearbox oil for applications requiring a 75W grade, predominantly European and Asian vehicles. It offers strong low-temperature flow and dependable protection for smooth, precise shifting.
Premium OEM 75W-80 manual transmission fluid for modern European and Asian gearboxes. Smooth shifting and long-term protection. 1 litre.
Millers XF Premium MTF 75W-90 is a fully synthetic API GL4/GL5 manual gearbox and transmission oil. It provides enhanced low-temperature flow for instant cold-start protection and maintains a stable film to protect gears under load, for smooth, precise shifting.
Millers CRX 75W-90 NT+ is a competition fully synthetic transmission oil for gearboxes and differentials without a limited-slip diff. Its NT+ (NANODRIVE) formulation reduces friction to free up power while giving extreme protection under race loads. A limited-slip version (CRX LS 75W-90 NT+) is also available.
Millers CRX 75W-140 NT+ is a competition fully synthetic transmission oil for gearboxes and differentials without a limited-slip diff. Its NT+ (NANODRIVE) formulation reduces friction to free up power while giving extreme protection under race loads. A limited-slip version (CRX LS 75W-140 NT+) is also available.
A competition fully synthetic limited slip transmission oil featuring NANODRIVE ester technology.
Millers CRX LS 75W-140 NT+ is a competition fully synthetic transmission oil for gearboxes and differentials fitted with a limited-slip diff, with friction modifiers for smooth limited-slip operation. Its NT+ (NANODRIVE) formulation reduces friction to free up power while giving extreme protection under race loads.
Millers CRX 75W-110 NT+ is a competition heavy-duty fully synthetic transmission oil for highly stressed applications, with friction modifiers for limited-slip differentials. Its NANODRIVE additive technology dramatically reduces friction while protecting gears under extreme load.
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