SAE 40 is a monograde engine oil for classic and vintage engines, and for warmer running conditions. Browse our SAE 40 oils below.
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Millers Motorsport CB 40 is a castor-based competition engine oil, long established in speedway and methanol-fuelled race engines. The natural lubricity of castor plus extra load-carrying additives gives outstanding wear protection, with enhanced anti-oxidant performance for race conditions.
Millers Classic Pistoneeze 40 is a moderate-detergent, monograde SAE 40 mineral engine oil for classic and vintage cars with modern-type filtration, formulated with ZDDP (zinc/phosphorus) for strong anti-wear protection of older engines.
Millers Vintage Millerol 40 is a non-detergent, monograde SAE 40 mineral engine oil for vintage cars with a strainer or basic filtration. Formulated with ZDDP anti-wear additive, its non-detergent design suits early engines built to let deposits settle rather than hold them in suspension.
Penrite Heritage LTM is a Light-to-Medium SAE 30/40 monograde, non-detergent engine oil for veteran and Edwardian machinery (around 1900–1920) with total-loss, wick-feed or early pressure-fed lubrication.
Penrite Heritage MTH is a Medium-to-Heavy SAE 40/50 monograde, non-detergent engine oil for veteran and Edwardian engines (around 1900–1920) with total-loss, wick-feed or early lubrication systems needing a heavier grade.
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