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Duckhams Classic Q 20w-50 Engine Oil

Duckhams Classic Q 20w-50 Engine Oil


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  • Description
  • Benefits
  • Specifications
  • Shipping Explained

Duckhams Classic Q 20w-50 Engine Oil

Duckhams Classic Q 20W-50, true to its history as “the engines choice”, and recommended in a wide variety of original owners’ handbooks, is the classic 20W-50 multi-grade engine oil

Carefully selected to be suitable for use in Classic vehicles requiring an SAE 20W-50 engine oil, Duckhams Classic Q 20W-50 features a finely balanced, updated additive package, including detergents and dispersants, in high quality hydrotreated base oils to maintain high levels of protection in engines fitted with a full flow filter.

Duckhams Classic Q 20W-50 is designed using updated additives to provide reliable protection to Classic vehicles whilst still meeting, or exceeding, the performance required of a classic oil.


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  • Carefully selected to be suitable for use in petrol or diesel cars, and light commercial vehicles, manufactured in the 1950s, 1960s, 1970s or 1980s, fitted with a full flow filter.
  • Optimal ZDDP level protects critical components, such as cam shafts, valve gears, flat tappets and bearings from wear.
  • Shear stable multi-grade engine oil designed to maintain oil pressure and reduce oil consumption within classic engines, compared to modern, low viscosity oils, whilst still be suitable for year-round use.
  • Updated additive technology gives improved wear protection, even in classic vehicles, whilst maintaining engine cleanliness and minimising rust and corrosion.
  • Stay in grade product, with improved oxidation stability, maintains appropriate viscosity and oil pressure longer than historic oils.
  • Modern hydrotreated base oils reduce oxidation and minimises formation of sludges and varnishes, maintaining engine performance for longer.
  • Distinctive “Duckhams green” colour.


  • API SJ / CE
Newer API specifications are fully backward compatible with older API specifications, so this oil can be used with confidence where older specification oils are required.  


SHIPPING IS FREE* for orders of £75 and over , regardless of the weight of your order.
We've tried to keep all other shipping costs as low as we can.

Carriage starts at just £0.95 (inc VAT) for small items, with our most common courier rate set at £5.99 for orders of 5kg (enough for 5 litres of oil).

  • *Free shipping is available for UK Royal Mail, UPS Access Point™ (click & collect) and standard UK courier services (not express / priority / islands).
  • Courier surcharges mean we are unable to offer free "to the door" courier shipping from us in Cornwall up to Highlands / Grampian in Scotland - and because we send a lot of liquids, not every courier option is available to us. UPS Access Point™ (click & collect) is available as a free shipping option across Scotland, Wales and England, wherever there is a UPS Access Point™ Location.
  • Carriage charges are based on weight - please see our table of carriage costs for full details (although adding an item to your cart and viewing the calculated carriage is often easier!).
  • Priority shipping is also available.

How long will it take to get my order?

We give an estimate of delivery dates as you shop and in your basket. The vast majority of items are held in stock and dispatched from our UK warehouse and we'll do all we can to get your order to you as quickly as possible.

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