Top 7 Fully Synthetic 10w40 UK – Car Engine Oils

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1. Smith & Allan

Fully Synthetic 10W-40 Motorcycle Engine Oil Ultra 4T 4-Stroke 5 Litre 5L

Smith & Allan - Excellent wear protection. Excellent cold flow characteristics. Protection against rust and corrosion. Control of sludge and engine deposits. Outstanding resistance to oxidation. Enhanced friction control for smooth performance.
BrandSmith & Allan
ManufacturerSmith & Allan
Weight5 kg (11.02 Pounds)
Part NumberLIMUL10W405LT

2. Castrol

5 L, Castrol 154AC8 Vecton Long Drain 10W40 Fully Synthetic Engine Oil

Castrol - Specifications: acea e6, scania low ash, rvi rld-2, deutz dqc iv-10la, e7, man m 3477, mb-approval 228.51, volvo vds 3, api ci-4, meets daf requirements for MX and PR engines.

A fully synthetic low saps engine oil formulated with unique system 5 technology delivering up to 40% better performance. Designed for the latest low emission Euro 4 & Euro 5 European trucks and buses, especially those requiring a low SAPS lubricant. Engineered for extended oil drain up to 100, 000km2 in the latest European diesel engines with modern low emission systems including DPFs, in accordance with OEM specifications. Provides exceptional resistance to contaminants, and delivers outstanding performance when running extended drains, even under severe operating conditions.
Height29.4 cm (11.57 Inches)
Length11.5 cm (4.53 Inches)
Width26 cm (10.24 Inches)
Part Number154AC8

3. Millers Oils

Millers CFS 10W40 Competition Fully Synthetic Nanodrive Engine Oil 5 Litres

Millers Oils - Outstanding cold flow properties for reduced wear at start up excellent thermal stability and oxidation resistance. The synergistic blend of three esters gives improved lubricity, reducing friction and enhancing the oils performance.

By using both polyalphaolefins pao and ester synthetics specially selected to minimise the amount of polymer used, the lubricant film provided is more resistant to 'shear' and viscosity loss in highly stressed areas. Original nanodrivE low friction technology increases power. Reduces friction up to 26% plus a reduction in wear compared to a standard engine oil. Load carrying capacity many times that of mineral oil. High film strength for ultimate protection.
BrandMillers Oils
ManufacturerMillers Oils
Height34 cm (13.39 Inches)
Length19 cm (7.48 Inches)
Width11 cm (4.33 Inches)
Part Number7954GMS

4. Westway Lubricants

10w40 Motorcycle Oil Fully Synthetic API: SN 5L 5 Litres

Westway Lubricants - Made in the uk api: sn, sl, SM, SJ. Suitable for use in a wide range of Motorcycles. Meets jaso ma2 Specifications. Fully compatible with Wet / Oil Immersed Clutches. High quality fully Synthetic 10w40 Motorcyle Oil.
BrandWestway Lubricants
ManufacturerWestway Lubricants
Part NumberInscape Data-01

5. Millers Oils

1 Litre, Millers Oils EE Performance Fully Synthetic 10w40 A3/B4 Engine Oil

Millers Oils - Part of the millers oils NANODRIVE Low Friction Technology range. A semi synthetic high performance, low friction, fuel efficient engine oil.
BrandMillers Oils
ManufacturerMillers Oils Ltd
Part Number7708-Perf-1

6. Smith & Allan

Fully Synthetic 10W-40 Motorcycle Engine Oil Ultra 4T 4-Stroke 20 Litre 20L

Smith & Allan - Enhanced friction control for smooth performance. Control of sludge and engine deposits. Protection against rust and corrosion. Excellent cold flow characteristics. Excellent wear protection. Outstanding resistance to oxidation.
BrandSmith & Allan
ManufacturerSmith & Allan
Weight20 kg (44.09 Pounds)
Part NumberLIMUL10W4020LT

7. Castrol

Bundle of Castrol POWER1 Racing 4T 10W-40 Motorcycle Oil 4L + Castrol POWER1 Racing 4T 10w-40 Motorcycle Oil 1L

Castrol - Fully synthetic 4 stroke motorcycle engine oil. Strong power output due to excellent frictional behaviour thanks to Race Derived Technology. List specifications:aPI SN, JASO MA2.

List specifications: aPI SN, JASO MA2. Suitable for API/JASO. Quick build-up of maximum lubrication safety. Power1 racing 4t 10w-40 is fully synthetic 4 stroke motorcycle engine oil for modern high performance sports bikes that increases engine acceleration and power right up to max rpm. Optimum, combined protection of engine, gearbox and oil bath clutch. Its race derived technology based on castrol's racing history and testing experience ensures maximum engine performance, without sacrificing engine durability, thus giving a significant benefit over other types of engine oils. Type: fully Synthetic.