
Castrol GTX 15W-40 Ultraclean 4L
£35.83 ex. VAT
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Order by 1pm Mon–Fri for same-day dispatch
- Order placed Today Confirmed by email
- Dispatched Packed in Manchester
- Delivered Tracked to your door
Estimated dates. Choose your service at checkout.
- Free delivery from £50
- 14-day returns
- Secure checkout

Product details
Description
About this product
Castrol GTX 15W-40 Ultraclean 4L
Castrol GTX 15W-40 Ultraclean comes in a 4L container for petrol and diesel cars. If your handbook asks for 15W-40, this GTX oil is a familiar choice for top ups and oil changes, particularly in older engines that use this grade.
Key features
- 15W-40 viscosity
- Ultraclean
- 4L container
- For petrol and diesel cars
Specifications
| Brand | Castrol |
| Product | GTX Ultraclean |
| Grade | 15W-40 |
| Size | 4L |
Checking the level
- Park on flat ground.
- Wait for the engine to cool.
- Check the dipstick and top up slowly if low.
FAQs
Is 15W-40 right for my car?
Check the handbook for the grade and specification required.
Specifications
- 15W-40 viscosity
- Ultraclean
- 4L container
- For petrol and diesel cars
| Brand | Castrol |
|---|---|
| Product | GTX Ultraclean |
| Grade | 15W-40 |
| Size | 4L |
Frequently asked questions
Is 15W-40 right for my car?
Check the handbook for the grade and specification required.
Delivery & returns
Delivery (UK only)
- Standard delivery £4.99, or free on orders of £50 or more. Arrives 2 to 3 working days after dispatch.
- Express delivery £6.99. Arrives the next working day after dispatch.
- Order before 1pm Monday to Friday and it is dispatched the same working day. Later orders, and orders placed at the weekend, are dispatched the next working day.
- We do not dispatch at weekends or on UK bank holidays.
- Remote postcodes can take longer. Heavy items may come on a pallet.
Returns
- Changed your mind? Tell us within 14 days of delivery, then send it back within a further 14 days.
- Faulty items can be returned within 30 days.
- Tinted or mixed paint, opened sealants and chemicals, and cut-to-size goods cannot be returned.









