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Castrol GTX 5W-30 C4 Fully Synthetic Car Engine Oil

Castrol GTX 5W-30 C4 Fully Synthetic Car Engine Oil


Castrol GTX 5w-30 C4 - 1 Litre

1 Litre


Castrol GTX 5w-30 C4 - 4 Litres

4 Litres


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  • Description
  • Benefits
  • Specifications
  • Shipping Explained

Castrol GTX 5W-30 C4 Fully Synthetic Car Engine Oil

General Details:

OilSynthetic Oil
Packing TypeBottle
Oil Viscosity Classification SAE5W-30
Content [litre]4
Manufacturer ApprovalMB 226.51
Manufacturer ApprovalRenault RN 0720
SpecificationACEA Light Duty C4

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Castrol GTX has been helping to extend engine life for over 50 years.  It has evolved to meet the needs of consumers and vehicle manufacturers since 1968 and continues to innovate and remain a trusted brand today. 

Severe driving conditions such as heavy traffic, poor fuel quality, harsh driving conditions and exceeding oil change intervals can all cause the build-up of a thick, tar like substance called sludge. 

Sludge can block your engine's vital oil ways like cholesterol and if untreated, can rob an engine of its power and, ultimately, its life.

Castrol GTX Double Action formula cleans away old sludge and protects against new sludge formation better than tough industry standards.

In terms of engine cleanliness, the Double Action formula offers outstanding performance by preventing deposits and dissolving existing deposits through its extraordinary detergent additive.

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  • Clears away old sludge and protects against new sludge formation
  • Superior engine cleanliness
  • High oxidation stability
  • Outstanding protection against high-temperature deposits


  • ACEA C4
  • MB-Approval 226.51
  • Renault RN 0720


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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Brand: Castrol
Oil Type: Fully Synthetic

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