Product Overview & Specifications
Total Quartz Diesel 15W-40 is a high-performance, heavy-duty diesel engine oil (HDDEO) engineered for a wide range of diesel engines operating under diverse conditions. Formulated predominantly with advanced hydrocracked Group II and Group III mineral base stocks, augmented by a robust additive package, it delivers a semi-synthetic level of performance in many critical areas without being a full synthetic. This blend technology, often referred to as “Technosynthese” by Total, provides superior oxidation stability, soot handling, and wear protection compared to conventional Group I mineral oils. Its core marketing claims center on extended engine life, exceptional engine cleanliness, and reliable performance in both naturally aspirated and turbocharged heavy-duty diesel engines. The real-world target audience for Total Quartz Diesel 15W-40 primarily includes commercial vehicle fleets, construction and agricultural machinery, industrial diesel power units, and older light-duty diesel trucks that do not feature Diesel Particulate Filters (DPFs) and specify a 15W-40 viscosity grade and API CI-4 Plus or ACEA E7 performance levels.
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 | Advanced Hydrocracked Mineral / Semi-Synthetic Blend (Total Technosynthese) |
| OEM Approvals & Licenses | MB-Approval 228.3, MAN M 3275-1, Volvo VDS-3, Mack EO-N, Renault Trucks RLD-2, Cummins CES 20076/77/78, Caterpillar ECF-1a/ECF-2 |
| ACEA / API Classifications | API CI-4 Plus / SL, ACEA E7 |
Recommended Applications & Car Compatibility
Total Quartz Diesel 15W-40 is meticulously engineered for a broad spectrum of heavy-duty diesel engines, including those found in trucks (heavy, medium, and light duty), buses, construction equipment (e.g., excavators, loaders, bulldozers), agricultural machinery (e.g., tractors, combines), and stationary industrial diesel engines. It is particularly well-suited for vehicles from manufacturers such as Mercedes-Benz (older commercial vehicle specifications), MAN, Volvo Trucks, Renault Trucks, Mack, Cummins, Caterpillar, and Detroit Diesel, provided their specifications align with the API CI-4 Plus / SL and ACEA E7 classifications and a 15W-40 viscosity. This oil demonstrates excellent performance in engines equipped with Exhaust Gas Recirculation (EGR) systems and Selective Catalytic Reduction (SCR) technology, offering robust protection against wear, soot accumulation, and high-temperature oxidation. While primarily designed for diesel applications, its API SL rating indicates suitability for older gasoline engines where such a specification is acceptable. It excels in environments where engines are subjected to prolonged heavy loads, high operating temperatures, and varying driving conditions, offering strong resistance to bore polishing and filter clogging from soot.
Operating Conditions & Drain Intervals
- Standard Drain Interval: For normal highway usage, moderate loads, and high-quality fuel, typical drain intervals range from 15,000 to 40,000 kilometers (or 9,000 to 25,000 miles) or 250 to 750 operating hours, depending on the specific engine manufacturer’s recommendations and the severity of service. Adherence to OEM guidelines and regular oil analysis is paramount for optimizing drain intervals.
- Severe Service Interval: In conditions deemed severe, such as continuous stop-and-go city driving, prolonged idling, heavy towing, dusty environments, extreme ambient temperatures, or extended periods of high-load operation, drain intervals should be significantly reduced, often by 30% to 50%. This could translate to 7,500 to 20,000 kilometers (or 4,500 to 12,500 miles) or 125 to 350 operating hours. Frequent oil analysis is highly recommended in these scenarios to precisely determine the oil’s remaining useful life.
- Temperature Performance: With its 15W rating, Total Quartz Diesel 15W-40 provides reliable cold-start pumpability down to approximately -20°C (-4°F), ensuring rapid oil circulation and minimizing wear during engine startup in moderately cold climates. Its SAE 40 hot viscosity ensures a robust lubricant film and stable viscosity under sustained high-load conditions, high ambient temperatures (up to and exceeding 40°C / 104°F), and intense thermal stress, safeguarding critical engine components from wear and degradation during prolonged operation.
Usage Restrictions & Limitations
Total Quartz Diesel 15W-40, while highly effective for its intended applications, has specific usage restrictions that must be rigorously observed to prevent potential engine damage or premature failure of emission control systems. It is explicitly NOT recommended for modern diesel engines equipped with Diesel Particulate Filters (DPFs) that require low-SAPS (Sulphated Ash, Phosphorus, Sulphur) formulations. Its sulphated ash content, typical of API CI-4 Plus and ACEA E7 oils (generally >1.3% wt), will lead to accelerated clogging and degradation of DPFs, resulting in costly repairs or replacements. Consequently, it is unsuitable for most post-2007/2010 diesel engines in North America and Europe that mandate API CK-4 Low-SAPS, API CJ-4, or ACEA C-series (e.g., C3, C4) or ACEA E6/E9 Low-SAPS specifications. Furthermore, this oil is generally not suitable for modern passenger car diesel engines (e.g., many Volkswagen TDI, BMW, Mercedes-Benz passenger car diesels) which typically require lower viscosity, low-SAPS oils (e.g., 5W-30, 0W-30) meeting specific OEM low-ash requirements. Do not use this oil in engines that explicitly specify a different viscosity grade or a performance classification not met by API CI-4 Plus / SL or ACEA E7. While compatible with older engine seal materials, ensuring the correct viscosity is used per the OEM specification is crucial to prevent potential issues like increased oil consumption or inadequate lubrication. For ambient temperatures consistently below -20°C (-4°F), a lower ‘W’ grade oil (e.g., 5W-40, 0W-40) would be necessary for optimal cold starting and lubrication.
