0W30 A5/B5 Fully Synthetic Engine Oil for Honda, Volvo and BMW

0W-30 A5/B5 Fully Synthetic Engine Oil

Westway Oils 0W-30 A5/B5 fully synthetic engine oil is designed for compatible petrol and diesel passenger-car engines requiring SAE 0W-30 with ACEA A5/B5 performance. The formulation combines synthetic esters, polyalphaolefins, viscosity modifiers and an additive package developed to support fuel efficiency, engine cleanliness and protection across a wide temperature range.

Available in 5-litre, 6-litre and 20-litre sizes.

Specifications and performance levels

• SAE 0W-30
• API SL/CF
• ACEA A5/B5
• BMW Longlife-98
• Volkswagen VW 503.00
• Volkswagen VW 503.01

Typical applications

Suitable for selected Honda, Volvo, BMW, Volkswagen and other petrol or diesel engines when the manufacturer specifies 0W-30 ACEA A5/B5 or another matching performance level listed above. Compatibility varies by engine, model year and service regime, so always check the handbook before purchase.

Key benefits

• Supports fuel-efficient engine operation
• Excellent flow and protection at low temperatures
• Strong lubricating performance at operating temperature
• Helps minimise wear and oxidation
• Helps maintain engine cleanliness
• Suitable for year-round use in typical UK conditions

Technical data

Specific gravity at 15.6°C	0.843
Kinematic viscosity at 40°C	53.5 cSt
Kinematic viscosity at 100°C	10.00 cSt
Viscosity index	177
Flash point, COC	210°C
Pour point	-50°C
Colour	Light brown/amber
Total base number	10.0 mg KOH/g

Technical test data can vary slightly between production blends.

Before ordering

ACEA A5/B5 oils are not interchangeable with every A3/B4, C2, C3 or manufacturer-specific 0W-30 oil. Match both the SAE viscosity and the exact performance specification required by the engine.

Frequently asked questions

Is this suitable for every Honda, Volvo or BMW?
No. Use it only where the vehicle manufacturer specifies 0W-30 A5/B5 or a matching listed approval/performance level.

What is the difference between the pack sizes?
The oil formulation is the same. Choose the quantity that matches the engine sump capacity and any amount needed for future top-ups.

Can this be used in a vehicle fitted with a DPF?
Only if the manufacturer specifies this oil. Many DPF-equipped vehicles require a particular ACEA C-category low-SAPS lubricant instead.