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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.
Castrol GTX 5W-30 RN17 is a high performance multi-range engine oil for petrol and diesel engines.
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 £4.99 for orders of 5kg (enough for 5 litres of oil).
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.
|Oil Type:||Fully Synthetic|
Free Shipping Over £75!
UK mainland, standard shipping*
No Leak Guarantee
We replace any shipping damages
We never like to be beaten on price