Product Overview & Specifications
Comma Eurodiesel 15W-40 is a high-performance, conventional heavy-duty diesel (HDD) engine oil engineered for a broad spectrum of commercial vehicles, agricultural machinery, and industrial applications. Formulated with a robust, high-quality mineral base stock and fortified with a sophisticated additive package, this lubricant is meticulously designed to provide exceptional protection and performance in a wide range of operating conditions. Its core marketing claims revolve around superior engine cleanliness, outstanding wear protection, robust oxidation stability, and effective soot dispersancy, all critical for the longevity and reliable operation of diesel engines operating under demanding loads. This oil targets the professional mechanic and fleet manager seeking a dependable, cost-effective solution for their mixed fleet, particularly those comprising older generation diesel engines that do not require low-SAPS (Sulfated Ash, Phosphorus, Sulfur) formulations.
Technical Characteristics Table
Here are the key universal technical metrics for this motor oil:
| Parameter | Value / Specification |
|---|---|
| SAE Viscosity Grade | 15W-40 |
| Base Oil Type | High-Quality Mineral (Group II/III Hydrocracked Blend) |
| OEM Approvals & Licenses |
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| ACEA / API Classifications |
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Recommended Applications & Car Compatibility
Comma Eurodiesel 15W-40 is primarily recommended for a wide array of heavy-duty diesel engines found in commercial road transport, construction equipment, agricultural machinery, and older light commercial vehicles. Its robust formulation makes it particularly well-suited for engines from manufacturers such as Mercedes-Benz (pre-Euro VI), MAN (pre-Euro V), Volvo (pre-Euro V), Scania, Renault, Mack, Cummins, Caterpillar, and DAF that specify ACEA E7 or API CI-4/CH-4 performance levels. This oil provides excellent performance in conditions prevalent in such operations:
- Turbochargers: The oil’s inherent shear stability and high-temperature oxidation resistance are crucial for protecting turbocharger bearings and ensuring their longevity, especially under sustained high boost pressures and exhaust gas temperatures.
- Engine Cleanliness: Its advanced dispersant and detergent additive package excels at suspending soot particles, preventing sludge and deposit formation on pistons and other critical engine components, thereby maintaining engine cleanliness and efficiency.
- Wear Protection: The high film strength and anti-wear additives provide robust protection against metal-to-metal contact in heavily loaded components like valve trains and piston rings, extending engine life.
- Mixed Fleets: With its API SL and ACEA A3/B4 classifications, it offers satisfactory performance for some older generation gasoline engines and light-duty diesel engines where a 15W-40 viscosity and these performance levels are specified, simplifying inventory for mixed fleet operators.
- Pre-DPF Engines: This formulation is specifically designed for diesel engines that are NOT equipped with Diesel Particulate Filters (DPFs), adhering to the typical requirements of higher SAPS content for enhanced wear and corrosion protection in such designs.
Operating Conditions & Drain Intervals
- Standard Drain Interval: For vehicles operating under typical highway conditions with regular maintenance and fuel quality, Comma Eurodiesel 15W-40 typically allows for drain intervals ranging from 20,000 km to 45,000 km, or approximately 300 to 600 operating hours, depending on OEM recommendations, engine age, and specific operational analytics (e.g., oil analysis results).
- Severe Service Interval: In conditions deemed severe, such as prolonged idling, frequent stop-and-go city driving, heavy loads, continuous towing, operations in dusty environments, or extreme temperature fluctuations, the drain interval should be reduced significantly. A conservative severe service interval would be between 10,000 km and 25,000 km, or 150 to 300 operating hours, to ensure optimal engine protection and prevent premature lubricant degradation. Regular oil analysis is highly recommended for optimizing drain intervals in severe applications.
- Temperature Performance:
- Cold Winter Starts: The 15W rating indicates a satisfactory cold cranking viscosity for moderate winter conditions, with a typical pumping limit around -20°C to -25°C. It ensures adequate oil flow to critical engine components during cold starts, minimizing wear in non-extreme cold climates.
- High-Heat Summer Loads: The ’40’ hot viscosity grade provides excellent film strength and thermal stability under sustained high operating temperatures, making it suitable for heavy-duty applications in hot climates or under continuous high-load operations, preventing viscosity breakdown and maintaining robust lubrication.
Usage Restrictions & Limitations
While Comma Eurodiesel 15W-40 offers robust protection for its intended applications, it is crucial to understand its limitations to prevent potential engine damage or reduced component life:
- Diesel Particulate Filter (DPF) Equipped Engines: This oil is NOT suitable for vehicles equipped with Diesel Particulate Filters (DPFs). Its relatively high Sulfated Ash, Phosphorus, and Sulfur (SAPS) content, characteristic of API CI-4/ACEA E7 formulations, will lead to rapid clogging and irreversible damage to DPFs, necessitating costly replacement. For DPF-equipped engines, a low-SAPS or mid-SAPS oil (e.g., ACEA C-series or ACEA E6/E9) must be used.
- Modern Light-Duty Passenger Vehicles: It is generally not recommended for modern gasoline or light-duty diesel passenger vehicles, especially those requiring lower viscosity grades (e.g., 5W-30, 0W-20) for fuel efficiency targets or specific OEM approvals (e.g., VW 504.00, BMW LL-04, MB 229.51/52). The higher viscosity can lead to increased fuel consumption and may not provide optimal lubrication for engines with tighter clearances.
- Viscosity Mismatch: Never use this oil in engines that specifically call for a different SAE viscosity grade, particularly lower ‘W’ grades for extremely cold climates or lower ‘hot’ viscosities for specific engine designs (e.g., xW-20, xW-30). An incorrect viscosity can compromise lubrication, lead to excessive wear, or affect hydraulic component operation.
- Newer OEM Specifications: For the newest generation of heavy-duty diesel engines (e.g., Euro VI and beyond) that require specific low-SAPS (e.g., ACEA E6, E9) or OEM-specific approvals for extended drains and emissions system compatibility, this oil may not meet the stringent requirements. Always refer to the vehicle manufacturer’s owner’s manual for the precise lubricant specifications.
