20W-50 Engine Oil

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.

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  • Millers Oils Classic Sport 20w50 (1)

    Millers Classic Sports 20w50

    Price range: €50.00 through €165.00 inc Vat

    DESCRIPTION: A high performance SAE 20w50 semi synthetic multigrade engine oil. Made with enhanced performance additives and shear stable viscosity index improvers in synthetic and mineral base. Formulated with full ZDDP (zinc/phosphorus). APPLICATION: Ideally suited to Aston Martin, Jaguar, Ferrari, Lotus and similar high specific output engines, yet suitable for all discerning owners who want the…

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  • Millers Motorsport CTV Mini 20W-50 engine oil for tuned engines 5L

    Millers Oils Motorsport CTV Mini 20w50 (Tuned Engines) 5L

    €68.00 inc Vat

    Ideally suitable for original ‘Classic’ Mini, Cooper or Cooper S.
    Suitable for the discerning Mini owner who wants the best possible oil available.

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  • Millers Classic High Performance 20W-50 engine oil 5L can

    Millers Classic High Performance 20w50 Engine Oil

    €62.00 inc Vat

    DESCRIPTION: Very high performance semi-synthetic competition oil for engines which have their transmission in the sump such as the original Mini. Extra high performance engine oil based on the highest quality performance additives and shear stable viscosity improvers in synthetic and mineral base. APPLICATION: Competition use on vehicles where the engine and transmission share the…

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  • Heritage 20w50 Classic Engine Oil

    Classic Oils Heritage 20w50 Classic Engine Oil

    €53.00 inc Vat

    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)

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  • Millers Oils Classic Pistoneeze 20w50

    Millers Classic Pistoneeze 20w50 Engine Oil

    Price range: €48.00 through €145.00 inc Vat

    DESCRIPTION: A moderate detergent premium SAE 20w50 multigrade mineral engine oil specifically engineered for classic cars incorporating a modern filtration systems. Contains high quality solvent refined base oils with latest technology performance additives and shear stable viscosity index improver. Formulated with ZDDP (zinc/phosphorus). APPLICATION: Use as received for engine lubrication of primarily pre-1980 vehicles, both petrol…

    Select optionsDone This product has multiple variants. The options may be chosen on the product page
  • Millers Oils Classic Mini Oil 20W50

    Millers Classic Mini Oil 20w50 (Standard Engines)

    €47.00 inc Vat

    Ideally suitable for original ‘Classic’ Mini, Cooper or Cooper S.
    Suitable for the discerning Mini owner who wants the best possible oil available.

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  • Millers Oils ZFS 4T 20W 50 4L

    Millers ZFS 4T 20w50 Motorcycle Engine Oil

    €37.00 inc Vat

    DESCRIPTION: ZFS 20w50 is a fully synthetic oil for engines/transmissions (where applicable) requiring a 20w50 viscosity. Formulated with the latest additive technology for maximum performance in 4 stroke applications. Includes a constant high friction profile for wet clutch performance meeting the JASO MA2 specification. APPLICATION: Suitable for use in motorcycle, scooter & ATV engines and…

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  • Millers Oils Classic 4T 20W 50 4L

    Millers Classic 4T 20w50 Motorcycle Engine Oil

    €29.00 inc Vat

    DESCRIPTION: Classic 4T 20w50 is a mineral oil for engines/transmissions (where applicable) requiring a 20w50 viscosity. The traditional technology used is ideal for the older air-cooled engines. The formulation includes ZDDP for maximum protection. Includes a constant high friction profile for wet clutch performance meeting the JASO MA2 specification. APPLICATION: Use as received for engine…

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  • Penrite Classic Mini 20W/50

    Penrite Classic Mini 20W/50

    €60.00 inc Vat

    A GL4 mineral oil suitable for combined engine/gearbox applications. Classic Mini is a premium mineral, high zinc, SAE 20W-50, designed in conjunction with International Mini Clubs and owners in the UK and Australia, specifically for all classic Minis (Austin, BMC & Leyland). This full-zinc mineral engine oil is suitable for classic Mini applications, and other…

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