DURALEC® ULTRA™ DIESEL MOTOR OIL
Duralec® Ultra™ Diesel Motor Oil combines premium base oils with Royal Purple’s proprietary additive technology, Synerlec®, to create a high-performance motor oil that optimizes engine performance and provides superior protection in rigorous on/off highway applications. Synerlec provides unsurpassed film strength and lubricity – up to 4X more than top competitors. In addition, advanced synthetic solvency reduces engine deposits and keeps engines clean. The net result is a better performing engine, with reduced downtime and lower cost of ownership. Royal Purple recommends for use in a variety of heavy-duty applications including commuting, over-the-road trucking, agriculture, construction and mining.
Key Benefits
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Extended Oil Life
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Maximum wear protection
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Reduced Oil Consumption
ADVANTAGES
- Extraordinary performance in older generation, high-output diesel engines
- Maximum wear protection – up to 33% better than CK-4 requirements
- Improved cold flow operation and start-up protection
- Extended oil life – up to 40% better than CK-4 requirements
- Reduced oil consumption
EXCEEDS INDUSTRY STANDARDS
Duralec Ultra engine oils meet/exceed performance requirements of API Service CK-4, CJ-4, CI-4+ for HD diesel engine oils.
Recommended For:
- ACEA E7-16 & E9-16
- CAT ECF-1, ECF-2 & ECF-3
- Cummins CES 20076, 20077, 20078, 20081 & 20086
- Daimler MB 228.3 & 228.31
- Detroit Diesel DFS 93K214 & 93K222
- Ford WSS-M2C171-F1
- Mack EO-N Premium Plus & EO-S 4.5
- MTU 2 & 2.1
- Renault RLD, RLD-2 & RLD-4
- Volvo VDS-3 & VDS 4.5
Available Sizes
| Grade | Available Sizes | Part Number | Item Number |
|---|---|---|---|
| 10W-30 | 55 Gallon Drum | 87456 | 301440490008 |
| 10W-30 | 3 Gallon Case | 80456 | 301440490195 |
| 10W-30 | Gallon Bottle | 83456 | |
| 15W-40 | 3 Gallon Case | 80561 | 301902490195 |
| 15W-40 | Gallon Bottle | 83561 |
Duralec Super vs. Duralec Ultra vs. API CK-4
Oxidation Control Advantage
- Reduced thermal degradation and acidity
- Increased protection against sludge and deposits
- Improved additive retention
- Resistance to viscosity change
- Extended oil life and drain intervals
- Exceed oxidation stability behind warranty restrictions
Durability advantage
Exceeds maximum requirements, ensuring continued engine performance throughout operation.
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Been using RP for years. Always has been one of the best products I use.
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Great product at a Very Good PRICE.
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Have been using Royal Purple HD 15w40 now for several years in all my trucks and am extremely satisfied. Also love Jegs free shipping and quick delivery.
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Been using this product for years more cars, trucks, tractors, generators, motorcycles and ATV’s and so on even transmissions and hydraulics too, all run so smooth with no problem’s even their oil filters are made for synthetics.
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Never trust another brand, like I do Royal Pruple
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Great quality oil. Keeps engine clean. Highly recommended
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Top quality product works excellent in my diesel keeps the sludge varnish buildup and wear down. Don. Dont know how many diesels Ive seen it. Cummings have an oil test and showing bearing material in the oil. I had mine checked and they said it was one of the best theyve ever seen there wasnt one microscopic piece of bearing material.
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Better gas mileage, wear resistance, and perfect if there is a chance of water contamination. Best price I have found.
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Top quality product works excellent in my diesel keeps the sludge varnish buildup and wear down. Don. Dont know how many diesels Ive seen it. Cummings have an oil test and showing bearing material in the oil. I had mine checked and they said it was one of the best theyve ever seen there wasnt one microscopic piece of bearing material.
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This is all I’ll use for my 2008 2500 Duramax. After reviewing and date gathering I’m happy to know I’m putting trustworthy oil in my expensive truck. My dad put over 8000 laps at Daytona driving for the “Pure oil trials” in the 60’s. He always said “good oil is cheap insurance, no matter what you drive”
FREQUENTLY ASKED QUESTIONS
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