CASTROL Engine oil Castrol GTX 10W-40 A3/B4 Capacity: 4l, Part Synthetic Oil 15F8FD
CASTROL SAE 10W40 Engine Oil 4L Part Synthetic ACEA A3/B4 API Gasoline SP
Overall Rating: 1.2 / 5 (average from multiple review sources, as of 2 Oct 2026)
Based on a total of 24,032 customer reviews from independent review platforms.
Sources & Transparency:
The values are derived from publicly available retailer ratings from platforms such as Feefo, http://Reviews.io , Trustpilot, and others, and are aggregated monthly.
All brand names and logos are the property of their respective owners.
Notice:
pricehunter.co.uk cannot guarantee that published shop ratings originate from consumers who have actually made a purchase from the reviewed retailer.
Based on a total of 24,032 customer reviews from independent review platforms.
Sources & Transparency:
The values are derived from publicly available retailer ratings from platforms such as Feefo, http://Reviews.io , Trustpilot, and others, and are aggregated monthly.
All brand names and logos are the property of their respective owners.
Notice:
pricehunter.co.uk cannot guarantee that published shop ratings originate from consumers who have actually made a purchase from the reviewed retailer.
Cheapest Total Price
Will usually delivered within 3 - 5 working days of receiving cleared payment.
Other
Other
PayPal
PayPal
Wallet
Wallet
Mastercard
Mastercard
Visa
Visa
Apple Pay
Apple Pay
Diners Club
Diners Club
£32.99
Free Delivery
Castrol Engine Oil Gtx Ultraclean 10W-40 A3/b4 Petrol Gasoline Diesel Fluids 4L
Overall Rating: 3.0 / 5 (average from multiple review sources, as of 4 Oct 2026)
Based on a total of 39,542 customer reviews from independent review platforms.
Sources & Transparency:
The values are derived from publicly available retailer ratings from platforms such as Feefo, http://Reviews.io , Trustpilot, and others, and are aggregated monthly.
All brand names and logos are the property of their respective owners.
Notice:
pricehunter.co.uk cannot guarantee that published shop ratings originate from consumers who have actually made a purchase from the reviewed retailer.
Based on a total of 39,542 customer reviews from independent review platforms.
Sources & Transparency:
The values are derived from publicly available retailer ratings from platforms such as Feefo, http://Reviews.io , Trustpilot, and others, and are aggregated monthly.
All brand names and logos are the property of their respective owners.
Notice:
pricehunter.co.uk cannot guarantee that published shop ratings originate from consumers who have actually made a purchase from the reviewed retailer.
Cheapest Price
1-3 working days
PayPal
PayPal
Mastercard
Mastercard
Visa
Visa
£32.99
Delivery from £6.00
CASTROL 15F8FD Engine oil
Overall Rating: 4.1 / 5 (average from multiple review sources, as of 1 Oct 2026)
Based on a total of 20,803 customer reviews from independent review platforms.
Sources & Transparency:
The values are derived from publicly available retailer ratings from platforms such as Feefo, http://Reviews.io , Trustpilot, and others, and are aggregated monthly.
All brand names and logos are the property of their respective owners.
Notice:
pricehunter.co.uk cannot guarantee that published shop ratings originate from consumers who have actually made a purchase from the reviewed retailer.
Based on a total of 20,803 customer reviews from independent review platforms.
Sources & Transparency:
The values are derived from publicly available retailer ratings from platforms such as Feefo, http://Reviews.io , Trustpilot, and others, and are aggregated monthly.
All brand names and logos are the property of their respective owners.
Notice:
pricehunter.co.uk cannot guarantee that published shop ratings originate from consumers who have actually made a purchase from the reviewed retailer.
4-5 Werktage
PayPal
PayPal
Mastercard
Mastercard
Visa
Visa
Payment by invoice
Payment by invoice
Instant bank transfer
Instant bank transfer
£33.49
7 GBP / 1l
Delivery from £8.45
CASTROL SAE 10W40 Engine Oil 4L Part Synthetic ACEA A3/B4 API Gasoline SP
Overall Rating: 1.2 / 5 (average from multiple review sources, as of 2 Oct 2026)
Based on a total of 24,032 customer reviews from independent review platforms.
Sources & Transparency:
The values are derived from publicly available retailer ratings from platforms such as Feefo, http://Reviews.io , Trustpilot, and others, and are aggregated monthly.
All brand names and logos are the property of their respective owners.
Notice:
pricehunter.co.uk cannot guarantee that published shop ratings originate from consumers who have actually made a purchase from the reviewed retailer.
Based on a total of 24,032 customer reviews from independent review platforms.
Sources & Transparency:
The values are derived from publicly available retailer ratings from platforms such as Feefo, http://Reviews.io , Trustpilot, and others, and are aggregated monthly.
All brand names and logos are the property of their respective owners.
Notice:
pricehunter.co.uk cannot guarantee that published shop ratings originate from consumers who have actually made a purchase from the reviewed retailer.
Will usually delivered within 1 working day of receiving cleared payment.
Other
Other
PayPal
PayPal
Wallet
Wallet
Mastercard
Mastercard
Visa
Visa
Apple Pay
Apple Pay
Diners Club
Diners Club
£34.99
Free Delivery
Castrol GTX 10W-40 A3/B4 Engine Oil 4L 4L
Overall Rating: 4.0 / 5 (average from multiple review sources, as of 7 Oct 2026)
Based on a total of 2,690 customer reviews from independent review platforms.
Sources & Transparency:
The values are derived from publicly available retailer ratings from platforms such as Feefo, http://Reviews.io , Trustpilot, and others, and are aggregated monthly.
All brand names and logos are the property of their respective owners.
Notice:
pricehunter.co.uk cannot guarantee that published shop ratings originate from consumers who have actually made a purchase from the reviewed retailer.
Based on a total of 2,690 customer reviews from independent review platforms.
Sources & Transparency:
The values are derived from publicly available retailer ratings from platforms such as Feefo, http://Reviews.io , Trustpilot, and others, and are aggregated monthly.
All brand names and logos are the property of their respective owners.
Notice:
pricehunter.co.uk cannot guarantee that published shop ratings originate from consumers who have actually made a purchase from the reviewed retailer.
2-3 working days
Mastercard
Mastercard
Visa
Visa
£35.49
Free Delivery
1 x Castrol GTX Semi Synthetic 10W40 A3/B4 Engine Oil, 4 Litre (Petrol & Diesel)
Overall Rating: 1.2 / 5 (average from multiple review sources, as of 2 Oct 2026)
Based on a total of 24,032 customer reviews from independent review platforms.
Sources & Transparency:
The values are derived from publicly available retailer ratings from platforms such as Feefo, http://Reviews.io , Trustpilot, and others, and are aggregated monthly.
All brand names and logos are the property of their respective owners.
Notice:
pricehunter.co.uk cannot guarantee that published shop ratings originate from consumers who have actually made a purchase from the reviewed retailer.
Based on a total of 24,032 customer reviews from independent review platforms.
Sources & Transparency:
The values are derived from publicly available retailer ratings from platforms such as Feefo, http://Reviews.io , Trustpilot, and others, and are aggregated monthly.
All brand names and logos are the property of their respective owners.
Notice:
pricehunter.co.uk cannot guarantee that published shop ratings originate from consumers who have actually made a purchase from the reviewed retailer.
Will usually delivered within 1 working day of receiving cleared payment.
Other
Other
PayPal
PayPal
Wallet
Wallet
Mastercard
Mastercard
Visa
Visa
Apple Pay
Apple Pay
Diners Club
Diners Club
£39.54
Free Delivery
1 x 4L - Castrol GTX Semi Synthetic 10W40 A3/B4 Engine Oil (Petrol & Diesel)
Overall Rating: 1.2 / 5 (average from multiple review sources, as of 2 Oct 2026)
Based on a total of 24,032 customer reviews from independent review platforms.
Sources & Transparency:
The values are derived from publicly available retailer ratings from platforms such as Feefo, http://Reviews.io , Trustpilot, and others, and are aggregated monthly.
All brand names and logos are the property of their respective owners.
Notice:
pricehunter.co.uk cannot guarantee that published shop ratings originate from consumers who have actually made a purchase from the reviewed retailer.
Based on a total of 24,032 customer reviews from independent review platforms.
Sources & Transparency:
The values are derived from publicly available retailer ratings from platforms such as Feefo, http://Reviews.io , Trustpilot, and others, and are aggregated monthly.
All brand names and logos are the property of their respective owners.
Notice:
pricehunter.co.uk cannot guarantee that published shop ratings originate from consumers who have actually made a purchase from the reviewed retailer.
Will usually delivered within 4 working days of receiving cleared payment.
Other
Other
PayPal
PayPal
Wallet
Wallet
Mastercard
Mastercard
Visa
Visa
Apple Pay
Apple Pay
Diners Club
Diners Club
£39.54
Free Delivery
Castrol GTX 10W-40 A3/B4 Synthetic Technology Engine Oil - 4 Litres 4L
Overall Rating: 1.2 / 5 (average from multiple review sources, as of 2 Oct 2026)
Based on a total of 24,032 customer reviews from independent review platforms.
Sources & Transparency:
The values are derived from publicly available retailer ratings from platforms such as Feefo, http://Reviews.io , Trustpilot, and others, and are aggregated monthly.
All brand names and logos are the property of their respective owners.
Notice:
pricehunter.co.uk cannot guarantee that published shop ratings originate from consumers who have actually made a purchase from the reviewed retailer.
Based on a total of 24,032 customer reviews from independent review platforms.
Sources & Transparency:
The values are derived from publicly available retailer ratings from platforms such as Feefo, http://Reviews.io , Trustpilot, and others, and are aggregated monthly.
All brand names and logos are the property of their respective owners.
Notice:
pricehunter.co.uk cannot guarantee that published shop ratings originate from consumers who have actually made a purchase from the reviewed retailer.
Will usually delivered within 4 working days of receiving cleared payment.
Other
Other
PayPal
PayPal
Wallet
Wallet
Mastercard
Mastercard
Visa
Visa
Apple Pay
Apple Pay
Diners Club
Diners Club
£39.99
GBP 10.00 / L
Free Delivery
Castrol - GTX 10W-40 A3/B4 Engine Oil 4L Part Synthetic Oil
Overall Rating: 1.2 / 5 (average from multiple review sources, as of 2 Oct 2026)
Based on a total of 24,032 customer reviews from independent review platforms.
Sources & Transparency:
The values are derived from publicly available retailer ratings from platforms such as Feefo, http://Reviews.io , Trustpilot, and others, and are aggregated monthly.
All brand names and logos are the property of their respective owners.
Notice:
pricehunter.co.uk cannot guarantee that published shop ratings originate from consumers who have actually made a purchase from the reviewed retailer.
Based on a total of 24,032 customer reviews from independent review platforms.
Sources & Transparency:
The values are derived from publicly available retailer ratings from platforms such as Feefo, http://Reviews.io , Trustpilot, and others, and are aggregated monthly.
All brand names and logos are the property of their respective owners.
Notice:
pricehunter.co.uk cannot guarantee that published shop ratings originate from consumers who have actually made a purchase from the reviewed retailer.
Will usually delivered within 3 - 4 working days of receiving cleared payment.
Other
Other
PayPal
PayPal
Wallet
Wallet
Mastercard
Mastercard
Visa
Visa
Apple Pay
Apple Pay
Diners Club
Diners Club
£41.29
GBP 10.32 / L
Free Delivery
- 1
- 2
- 3
- 4
- next page
Cheapest offer
Castrol GTX Ultraclean 10w40 A3/B4 4LDrivers and mechanics have trusted Castrol GTX for over 50 years to help extend engine life. Castrol GTX's 3X-Clean formula has been developed to fight the three main causes of engine sludge: heat, contaminants and short trips. By cleaning away existing sludge and creating a barrier that helps stop deposits from forming, Castrol GTX keeps engines cleaner for longer, 35% cleaner than industry standards.* This means drivers and their vehicles enjoy more years together. Castrol GTX: helps extend engine life.AdvantagesThe Castrol GTX range:Delivers superior protection against sludge caused by pollutants, heat and frequent short trips.Provides advanced protection against viscosity and thermal breakdown.Demonstrates exceptional protection against high temperature depositsContains premium synthetic technology base oils and anti-wear additivesProduct Performance ClaimsACEA A3/B4API SPMeets Fiat 9.55535-D2 / 9.55535-G2MB-Approval 226.5/ 229.3Renault RN 0700
£32.99
1-3 working days
Diy.com (B&Q)
🤖 Ask ChatGPT
💡 Is it worth the price?
🔁 Better alternatives?
⭐ What do users say?
Castrol Engine Oil Gtx Ultraclean 10W-40 A3/b4 Petrol Gasoline Diesel Fluids 4L - Details
▶ Finding you the best price!
We have found 9 prices for Castrol Engine Oil Gtx Ultraclean 10W-40 A3/b4 Petrol Gasoline Diesel Fluids 4L. Our price list is completely transparent with the cheapest listed first. Additional delivery costs may apply.
Castrol Engine Oil Gtx Ultraclean 10W-40 A3/b4 Petrol Gasoline Diesel Fluids 4L - Price Information
- Cheapest price: £32.99
- The cheapest price is offered by Diy.com (B&Q). You can order the product there.
- The price range for the product Castrol Engine Oil Gtx Ultraclean 10W-40 A3/b4 Petrol Gasoline Diesel Fluids 4L is €£32.99to €£138.99 with a total of 9 offers.
- Payment methods: The online shop Diy.com (B&Q) supports: PayPal, Mastercard, Visa
- Delivery: The shortest delivery time is 1-3 working days working days offered by Diy.com (B&Q).
Similar products
CASTROL 1612B3 Engine oil
£195.99
9 GBP / 1l
autodoc.co.uk
Delivery from £1.99
Castrol MAGNATEC Diesel 5W-40 5W40 DPF Fully Synthetic Engine Oil - 1 Litre 1L
£10.49
9 GBP / 1l
autodoc.co.uk
Delivery from £8.45
Don't forget your voucher code:
Report Illegal Concerns
You are about to report a violation based on the EU Digital Services Act (DSA).