10 Best 5w 30 Fully Synthetic Engine Oil in The UK

Last updated on 07/08/2025
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Best Choice
1
9.7
Exceptional
Save 41%
Castrol MAGNATEC 5W-30 A5 Engine Oil 5L
Castrol
Castrol MAGNATEC 5W-30 A5 Engine Oil 5L
41% Off
Why We Love It
  • Superior performance in extreme cold.
  • Combines patented DUALOCK technology.
  • Provides powerful wear protection.
Main Highlights
  • Suitable for use in automotive gasoline and diesel engines where the manufacturer recommends an ACEA A1/B1, A5/B5, API SN, ILSAC GF-5 or earlier specification 5W-30 lubricant
  • Specifications: ACEA A1/B1, A5/B5 - API SN - ILSAC GF-5 - Meets - Ford WSS-M2C913-C/ WSS-M2C913-D
  • Proven to reduce wear in stop-start situations- remove this statement
  • Provides superior performance under extreme cold start up conditions
  • combining patented DUALOCK molecule technology with Castrol’s most efficient full synthetic base oils. Forms a powerful force-field of wear protection
9.7
Exceptional
Save 41%
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Best Value
2
9.6
Superb
MANNOL Energy Premium Fully Synthetic Engine Oil 5W-30 C3 DPF, 2 x 5 Litres
MANNOL
MANNOL Energy Premium Fully Synthetic Engine Oil 5W-30 C3 DPF, 2 x 5 Litres
Why We Love It
  • Outstanding thermal stability ensured.
  • Significant resistance to oxidisation.
  • Compatibility with all seals.
Main Highlights
  • Excellent thermal stability;
  • Great anti-wear and anti-scuffing properties;
  • Exceptional resistance to oxidisation and ageing;
  • Excellent anticorrosion, anti-aerating and antifoaming properties and a low evaporation capacity;
  • Compatible with all sealing materials;
9.6
Superb
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3
9.4
Superb
Save 36%
Castrol EDGE 5W-30 LL Engine Oil 4L
Castrol
Castrol EDGE 5W-30 LL Engine Oil 4L
36% OffFree Shipping
Why We Love It
  • Suits multiple high-end vehicle brands.
  • Boosts performance under pressure.
  • Improves engine efficiency significantly.
Main Highlights
  • Suitable for ACEA/VW/BMW/Porsche/Mercedes
  • Specifications: ACEA C3 - BMW - Longlife-04 - MB-Approval 229.31/ 229.51 - Porsche C30 - VW 504 00/ 507 00
  • Castrol EDGE boosted with Titanium FST sustains maximum performance even when under pressure
  • Independently proven to improve engine efficiency
  • Castrol EDGE lowers friction and maximises engine performance
9.4
Superb
Save 36%
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4
9.3
Superb
TotalEnergies Quartz INEO MC3 5W30 Engine Oil - ACEA C3, API SN Plus/CF - Low SAPS - Age-Resistance Technology - Advanced Synthetic Motor Oil Lubricant - 5L
TotalEnergies
TotalEnergies Quartz INEO MC3 5W30 Engine Oil - ACEA C3, API SN Plus/CF - Low SAPS - Age-Resistance Technology - Advanced Synthetic Motor Oil Lubricant - 5L
Free Shipping
Why We Love It
  • Suitable for multiple car brands.
  • Improves overall engine performance.
  • Maintains crucial engine approvals.
Main Highlights
  • Suitable for: FIAT 9.55535-S3, HYUNDAI, KIA, VW 505.00, VW 505.01
  • Approvals: BMW LL-04, MB-APPROVAL 229.51/229.52, OPEL / VAUXHALL OV 040 1547 - D30, OV 040 1547 - G30
  • Compatible: CHRYSLER MS-11106
  • Classifications: ACEA C3, API SP
  • TotalEnergies Quartz Ineo MC3 5W-30 proven to improve engine performance
9.3
Superb
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5
9.2
Superb
TotalEnergies Quartz 9000 NFC 5W30 Engine Oil - ACEA A5/B5, API SL/CF - Age-Resistance Technology - Fuel Economy Formula - Advanced Synthetic Motor Oil Lubricant - 5L
TotalEnergies
TotalEnergies Quartz 9000 NFC 5W30 Engine Oil - ACEA A5/B5, API SL/CF - Age-Resistance Technology - Fuel Economy Formula - Advanced Synthetic Motor Oil Lubricant - 5L
Free Shipping
Why We Love It
  • Optimum protection for engines.
  • Specially tailored for turbocharged engines.
  • Great for multi-valve engines.
Main Highlights
  • Suitable for: FIAT 9.55535-G1, FIAT 9.55535-N1
  • Approvals: FORD WSS-M2C-913-D (Compatible with FORD WSS-M2C913-B), JAGUAR LAND ROVER STJLR.03.5003
  • Classifications: ACEA A5/B5, API CF, API SL
  • TotalEnergies Quartz 9000 NFC 5W-30 protect gasoline and Diesel engines
  • Particularly suited to turbocharged, multi-valve and direct injection engines.
9.2
Superb
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6
9.0
Superb
Mannol 5 Litre Energy 5W-30 Engine Oil A3/B4 Universal Synthetic Ester Technology
MANNOL
Mannol 5 Litre Energy 5W-30 Engine Oil A3/B4 Universal Synthetic Ester Technology
Why We Love It
  • Ensures efficient engine operation.
  • Preserves engine power parameters.
  • Significantly increases engine life.
Main Highlights
  • SPECIFICATIONS: SAE 5W-30 Synthetic Engine Oil
  • RECOMMENDATION: API SN/CH-4, ACEA A3/B4, VOLKSWAGEN 502 00, VOLKSWAGEN 505 00, VOLKSWAGEN 503 01, VOLKSWAGEN 501 01, MB 229.3, MB 229.5, BMW LL-98, RENAULT RN0710, RENAULT RN0700, FORD WSS-M2C913-B
  • PRODUCT PROPERTIES: Innovative universal premium ester-containing engine oil for modern gasoline and diesel engines with and without turbocharging. Designed based on the requirements of European car manufacturers.
  • ADDITIONAL INFO: Designed for gasoline and diesel engines of a wide fleet of cars (cars, light utility vehicles, vans and light trucks) of European and other manufacturers.
  • DISCLAIMER: The oil is not suitable for use in heavy trucks and similar vehicles!
9.0
Superb
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7
8.8
Excellent
Save 4%
Mannol 5 Litre Energy 5W-30 Engine Oil 7908 API SN/CH-4 ACEA C2 Premium Synthetic Ester Technology
MANNOL
Mannol 5 Litre Energy 5W-30 Engine Oil 7908 API SN/CH-4 ACEA C2 Premium Synthetic Ester Technology
4% Off
Why We Love It
  • Ensures optimal engine performance.
  • Extends vehicle's lifespan.
  • Promotes fuel efficiency.
Main Highlights
  • SPECIFICATIONS: SAE 5W-30 Synthetic Engine Oil
  • RECOMMENDATION: API SN/CH-4, ACEA C2, ACEA C3, VOLKSWAGEN 505 01, BMW LL-04, MB 229.51, MB 229.52, MB 229.31, MB 226.5, GM dexos2, RENAULT RN0700, RENAULT RN0710
  • PRODUCT PROPERTIES: Innovative, versatile, all-synthetic ester-containing premium synthetic engine oil for modern diesel and gas turbocharged and non-turbocharged engines. Designed in accordance with the requirements of European automakers.
  • ADDITIONAL INFO: Designed for gasoline and diesel engines in a wide fleet of cars, light SUVs, minibuses and light trucks of European and other manufacturers, where the performance level of ACEA C3 is required.
  • DISCLAIMER: The oil is not suitable for use in heavy trucks and similar vehicles!
8.8
Excellent
Save 4%
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8
8.7
Excellent
Mannol 5 Liter Longlife 504/507 5W-30 Engine Oil C3 Universal Fully Synthetic
MANNOL
Mannol 5 Liter Longlife 504/507 5W-30 Engine Oil C3 Universal Fully Synthetic
Why We Love It
  • Ample storage with 5L volume.
  • Promises high efficiency.
  • User-friendly operation.
Main Highlights
  • SPECIFICATIONS: SAE 5W-30, API SN, ACEA C3, MB 229.51, VOLKSWAGEN TL 52 195, BMW Longlife-04, PORSCHE C30
  • APPROVAL: VOLKSWAGEN 504 00 Approval, VOLKSWAGEN 507 00 Approval
  • PRODUCT PROPERTIES: Universal fully synthetic premium engine oil (contains PAO) for modern petrol and diesel engines of VW group cars (including direct injection) with and without turbocharging, including those equipped with pump-injectors (Pumpe-Düse)
  • ADDITIONAL INFO: Designed for petrol and diesel EURO IV and EURO V engines for a wide range of VW vehicles (passenger cars, light off-road vehicles, vans and light trucks) with additional requirements for engine oils according to the 504 00/507 00 specification and the ones preceding it
  • DISCLAIMER: The oil is not suitable for use in heavy trucks and similar vehicles!
8.7
Excellent
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9
8.7
Excellent
Save 4%
REDEX 5w-30 C3 Fully Synthetic Engine Oil for BMW VAUX MB, 2Litre
Redex
REDEX 5w-30 C3 Fully Synthetic Engine Oil for BMW VAUX MB, 2Litre
4% OffFree Shipping
Why We Love It
  • Suitable for modern vehicles.
  • Prolongs engine life.
  • Withstands higher temperatures.
Main Highlights
  • High quality fully synthetic engine oil is suitable for both modern petrol and diesel vehicles, including those fitted with exhaust after-treatment units that require an ACEA C3 grade
  • It is made from a synthetic blend which prolongs the life of your engine
  • This engine oil is recommended for applications requiring: API SN CF; ACEA C3; BMW LL-04; dexos 2; VW 502 00, VW 505 00, VW 505 01; MB 229.31, MB 229.51, MB 229.52
  • Synthetic oil helps to prolong the life of your engine and reduce emissions, and withstands higher temperatures to help protect your engine: Our premium synthetic oil lasts longer between service intervals, meaning you don’t need to change it as often. This is convenient for you, saves you money, and reduces waste oil
  • Always refer to your manufacturer guidelines to choose your oil, or use our Redex Oil Finder lookup
8.7
Excellent
Save 4%
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10
8.7
Excellent
Mannol 5 Litre Energy Formula FR 5W-30 Engine Oil 7707 ACEA A5/B5 Fully Synthetic Ester Technology
MANNOL
Mannol 5 Litre Energy Formula FR 5W-30 Engine Oil 7707 ACEA A5/B5 Fully Synthetic Ester Technology
Why We Love It
  • Resists ageing effectively.
  • Premium energy-saving formulation.
  • Ideal for Ford and Volvo.
Main Highlights
  • SPECIFICATIONS: SAE 5W-30 Full Synthetic Engine Oil
  • RECOMMENDATION: API SN, ACEA A5/B5, FORD WSS-M2C913-D, FORD WSS-M2C913-C, FORD WSS-M2C913-B, FORD WSS-M2C913-A, VOLVO VCC 95200377 (Service Fill), MB 229.6, FIAT 9.55535-G1, JAGUAR STJLR.03.5003, LAND ROVER STJLR.03.5003
  • PRODUCT PROPERTIES: Innovative energy-saving ester-containing fully synthetic premium engine oil specially developed for modern diesel engines and a number of petrol engines in FORD and VOLVO vehicles, considering the requirements for heavy-duty operation and extended engine oil change intervals.
  • ADDITIONAL INFO: Designed for diesel engines of passenger vehicles by FORD, VOLVO and GM, where SAE 5W-30 oil is recommended, which complies with the ACEA A5/B5 standard and meets FORD WSS-M2C913-D specification, as well as for petrol and diesel engines of these brands where previous specifications 913-C, 913-B and 913-A oils are recommended.
  • DISCLAIMER: The oil is not suitable for use in heavy trucks and similar vehicles!
8.7
Excellent
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Approvals: BMW LL-04, MB-APPROVAL 229.52, 229.51, 229.31, PORSCHE C30, VW 504.00, VW 507.00
RS Mannol Energy 5W30 A3/B3 Fully Synthetic Engine Oil, WSS-M2C913-B, 5 Litres
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We scanned 525 products

We reviewed these offers relevant to the 5w 30 Fully Synthetic Engine Oil within online retailers such as Amazon, eBay and other local retailers, ensuring we covered all major brands and models. The products we selected come from trusted brands like Castrol, MANNOL, TotalEnergies, Redex, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.
For the best 5w 30 Fully Synthetic Engine Oil in the market, we considered we took a deep dive into 2626 online reviews , focusing on elements like user satisfaction, performance in real-world conditions, and long-term reliability. Our ranking also evaluates each review’s relevancy, authenticity, up-to-dateness and depth so that the comparison is more sound.

We concluded that:

  • The clear winner of our analysis is Castrol MAGNATEC 5W-30 A5 Engine Oil 5L. We love many things about this product by Castrol. What sets it apart from the competition is Superior performance in extreme cold. , Combines patented DUALOCK technology. , Provides powerful wear protection.
  • The best value product for most shoppers and where user satisfaction is continuously the highest is MANNOL Energy Premium Fully Synthetic Engine Oil 5W-30 C3 DPF, 2 x 5 Litres by MANNOL based on online reviews by bloggers, experts and online shoppers.
  • The biggest bargain at the moment for 5w 30 Fully Synthetic Engine Oil and the best cost-to-value ratio is Castrol MAGNATEC 5W-30 A5 Engine Oil 5Lat Castrol with a 41% discount.
  • Our list of the best 5w 30 Fully Synthetic Engine Oil is updated regularly to reflect new releases and changes in product availability, so be sure to check back often for the latest rankings and discounts.