Royal Purple Duralec Super 5W-40 CK-4 Diesel Oil 1 Gallon (Case of 3)
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Regular price
$125.97
Verified Fitment & Application Support
This product is selected for proper fitment and compatibility with the listed engine application. Our team is available to assist with fitment questions, installation considerations, and supporting components to ensure a smooth install and reliable performance.
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Compliance & Restrictions
California Proposition 65
WARNING: This product can expose you to chemicals that are known to the State of California to cause cancer and/or reproductive harm. For more information, visit
www.P65Warnings.ca.gov.
Royal Purple Duralec Super SAE 5W-40, supplied as a factory case of three one-gallon bottles under part number 80540. Duralec Super is an API-licensed CK-4 heavy-duty diesel engine oil built for emissions-controlled engines running diesel particulate filters, diesel oxidation catalysts, EGR and SCR systems on ultra-low sulfur diesel fuel.
The 5W-40 grade is the one to reach for in cold-climate service. Royal Purple publishes a pour point of -48 C (-54 F) for this grade, the lowest of the three Duralec Super viscosities. The individual gallon bottle is part number 83540.
Key Features
- API-licensed CK-4 and backward compatible with CJ-4, CI-4 Plus and CI-4 warranty requirements
- Low-ash (reduced SAPS) chemistry that protects DPFs, oxidation catalysts and SCR hardware
- Enhanced oxidation resistance to slow oil aging, acid build-up and viscosity increase
- Wear protection for piston rings, valve train and bearings beyond CK-4 minimums
- Strong detergency for deposit and sludge control across the service interval
- Corrosion protection during operation and while the engine sits shut down
Applications and Approvals
Royal Purple lists Duralec Super 5W-40 against API CK-4, CJ-4, CI-4 Plus and CI-4 warranty requirements, along with ACEA E7-16 and E9-16, Caterpillar ECF-3, Cummins CES 20086, Daimler MB 228.31, Detroit Diesel DFS 93K222, Deutz DQC III-10 LA, Ford WSS-M2C171-F1, JASO DH-2, Mack EO-S-4.5, MTU Type 2.1, Renault RLD-4 and Volvo VDS-4.5.
Royal Purple lists Duralec Super as its recommended diesel engine oil for automotive and light-truck diesel engines and for fleet equipment. Always follow the viscosity grade and oil specification printed in your owner's manual.
Product Details
- Brand: Royal Purple
- Manufacturer Part Number: 80540
- Product Line: Duralec Super Diesel Motor Oil
- SAE Viscosity Grade: 5W-40
- Package: 1 gallon bottle, case of 3 (three gallons total)
- Typical Properties: Viscosity 93.3 cSt at 40 C and 15.2 cSt at 100 C, viscosity index 172, flash point 224 C (435 F), pour point -48 C (-54 F), cold crank simulator 6370 cP at -30 C, TBN 10.1 mg KOH/g, sulfated ash 1.0 percent
Shipping Height: 8.7
Shipping Length: 12.9
Shipping Width: 12.3