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Optilube

Optilube 15W-40 Semi Synthetic Engine Oil API SL/CH-4 ACEA A3/B4 | GTM

Optilube 15W-40 Semi Synthetic Engine Oil API SL/CH-4 ACEA A3/B4 | GTM

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Semi Synthetic Engine Oil

Optilube 15W-40 Semi Synthetic Engine Oil

High-performance semi-synthetic multi-grade engine oil for suitable petrol and diesel engines requiring SAE 15W-40 and API SL/CH-4 performance.

★ Trusted Bury-Based Retailer Free UK Delivery Available Fast Dispatch

About This Oil

Optilube 15W-40 is a super multi-grade semi-synthetic engine oil formulated with advanced additive technology. It is designed for suitable normally aspirated and turbocharged petrol and diesel engines requiring API SL/CH-4 performance.

Its formulation helps provide reliable protection under demanding operating conditions, while supporting engine cleanliness, sludge control, anti-wear performance and corrosion protection. It is also designed to help control oil consumption and maintain dependable lubrication at both high and low temperatures.

Key Benefits

Dependable Engine Protection

Helps protect against wear and corrosion during everyday driving

Engine Cleanliness

Helps control sludge and deposits for cleaner running

All-Temperature Performance

Designed to perform reliably in high and low operating temperatures

Oil Consumption Control

Helps minimise oil consumption and protect against ring sticking

Specifications & Performance

Standard Approval / Specification
API SL / CH-4
ACEA A3 / B3 / B4 / E2
Mercedes-Benz MB 228.1 / MB 229.1
MAN MAN 270 / 271
Volvo VDS
Volkswagen VW 501.01 / 505.00
Oil Type Semi Synthetic

Always check your vehicle handbook for the exact oil viscosity and required manufacturer specification before purchase. Do not use this oil where your vehicle requires a lower-viscosity or specialist low-SAPS formulation.

Product Details

Attribute Detail
Brand Optilube
Product Name Optilube 15W-40 SL/CH-4
Oil Type Semi Synthetic Engine Oil
Viscosity (SAE) 15W-40
Total Base Number (TBN) 10 mgKOH/g
Density at 15.5°C 0.887 g/cm³
Flash Point (COC) 218°C
Kinematic Viscosity at 40°C 104 cSt
Kinematic Viscosity at 100°C 14.3 cSt
Viscosity Index 141
Pour Point -27°C

Important Compatibility Notice: Always confirm that SAE 15W-40 oil meeting the listed API, ACEA and manufacturer requirements is correct for your vehicle before use. Please check your handbook or message us with your registration number if you are unsure.

Safety & Handling

Avoid Skin Contact

Wash hands after handling engine oil

Keep Safely Stored

Keep out of reach of children

Protect the Environment

Do not allow oil to enter drains, soil or waterways

Responsible Disposal

Dispose of used oil and packaging under local regulations

Why Buy From GT Motor Parts

Free UK Delivery

On qualifying orders

Click & Collect

From our Bury store

Trusted Quality

Products sourced from reputable manufacturers

Easy Returns

Hassle-free policy

Always check your vehicle handbook for the exact oil specification before use.

Not sure this oil is correct for your vehicle? Message us your registration number →

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