20W-50 is the classic car grade — the right viscosity for most pre-1980 engines, air-cooled units and classic Minis, where modern thin oils simply won’t hold oil pressure. High-zinc (ZDDP) formulations protect flat-tappet cams and followers.As Ireland’s classic oil specialists we stock the full spread: Millers Classic Pistoneeze and Classic Sports 20W-50, Classic High Performance, dedicated Mini oils for standard and tuned engines (including Penrite Classic Mini 20W/50), Classic Oils Heritage, and 4T bike options. Irish stock — free delivery over €150, same-day dispatch before 2pm.
Not sure which range to choose? Compare our oil ranges →
Showing all 9 results
Millers Classic Sports 20W-50 is a high-performance semi-synthetic multigrade engine oil for classic and performance road cars, with enhanced additives and a shear-stable viscosity for strong protection under spirited driving.
Ideally suitable for original ‘Classic’ Mini, Cooper or Cooper S.
Suitable for the discerning Mini owner who wants the best possible oil available.
Millers Classic High Performance 20W-50 is a high-performance semi-synthetic competition oil for engines that share their oil with the transmission, such as the original Mini. Built on top-quality additives and shear-stable base oils for strong protection under hard use.
A high-quality multigrade mineral oil designed for classics in good condition with oil filters. Its ideal for engines with heavily-loaded rubbing surfaces. Contains 1300 PPM of (ZDDP)
Millers Classic Pistoneeze 20W-50 is a moderate-detergent, mineral multigrade engine oil engineered for classic cars with modern-type filtration. High in ZDDP (zinc/phosphorus) anti-wear additive, it protects older engines, flat-tappet cams and followers and helps reduce oil consumption in worn engines.
Ideally suitable for original ‘Classic’ Mini, Cooper or Cooper S.
Suitable for the discerning Mini owner who wants the best possible oil available.
Millers ZFS 4T 20W-50 is a fully synthetic 4-stroke motorcycle engine oil for road and track use. It meets JASO MA2 for dependable wet-clutch performance and suits motorcycle, scooter and ATV engines and transmissions, whether air- or water-cooled. Gives high-temperature endurance, strong valve-train wear protection and excellent engine cleanliness.
Millers Classic 4T 20W-50 is a mineral 4-stroke motorcycle oil for older, air-cooled classic engines – primarily pre-1980 machines. It combines period-correct 20W-50 viscometrics with modern additive technology and high ZDDP levels for maximum anti-wear protection, and meets JASO MA2 for wet-clutch use. The higher viscosity also helps reduce oil consumption and leakage on high-mileage engines.
Penrite Classic Mini 20W-50 is a premium, high-zinc API GL-4 mineral oil for the classic Mini and other combined engine/gearbox (transmission-in-sump) applications, developed with the marque in mind to protect both engine and gearbox.
No products in the basket.
