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20w-50 Engine Oil SJ/CD


Duckhams Classic Q 20W-50, true to its history as “the engine’s choice” and recommended in a wide range of original owners’ handbooks, is the classic SAE 20W-50 engine oil.



Duckhams Classic Q 20W-50 features an optimal level of ZDDP (“zinc”) anti-wear capability, moderate detergency and stay-in-grade shear stability designed specifically for petrol and diesel fuelled classic vehicles manufactured between 1950 and 1989 and is also suitable for older vehicles where full-flow cartridge filters have been retro-fitted.

Duckhams Classic Q 20W-50 is unsurpassed in controlling oil consumption, minimising deposits and maintaining oil pressure in older engines.



Performance Level


Oil Type

Hydrofinished mineral oil




1 Litre 1 Gallon 20 Litres

Engine Diesel


Engine Petrol


Size (Litres)

1L 4.54L 20L


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  • Duckhams Classic Q 20W-50 is formulated to provide excellent low temperature pumpability so that the oil flows freely and minimises wear at start-up, even at very low temperatures.
  • Protection at operating temperature is assured. For reference, Duckhams invented, and perfected, multigrade oils in Europe.
  • Timing gear and bearing life is maximised on account of the product’s excellent performance across the engine’s full operating temperature range, from cold start to operating temperature –Duckhams Classic Q 20W-50 is truly “the engine’s choice”
  • Through careful selection of oxidation-stable base oils and additive technology, Duckhams Classic Q 20W-50 protects from bearing corrosion and prevents sludge build-up.
  • Duckhams Classic Q 20W-50 is formulated specifically for vehicles manufactured from 1950 – 1989 and also older vehicles where full-flow cartridge filters have been retro-fitted.
  • Optimised ZDDP (“zinc”) level for engine component wear protection is a leading feature of Duckhams Classic Q 20W-50
  • API SJ/CD performance level
  • Original, distinctive “Duckhams green” colour


Please note that orders placed after 4pm, will be
processed the following day, adding 1 working day to the delivery service.