DURON UHP 10W-40 is an ultra high performance synthetic engine oil designed to meet the toughest demands of the new API CK-4 category. Formulated to deliver new performance standards in extreme heavy duty applications, on and off-road, offering you and your engine ultra protection. At the same time it offers extended drain capabilities to save you money and get your engines running for longer.
Car and Light Duty Diesel Engines
DURON engine oils are also suitable for use in diesel powered engines in smaller vehicles, including passenger cars and light trucks where API CK-4, CJ-4, CI-4 Plus, CI-4, CH-4 or earlier specifications are required. Consult your owner’s manual.
Gasoline and CNG Engines
Many of the DURON diesel engine oils exceed the latest API SN gasoline engine oil specification and are suitable for some gasoline and CNG applications where API SN or earlier specifications are required. Many are also suitable for use in wet clutch applications where JASO MA2 is recommended. Please reference the Approvals and Recommendations list on the previous page to ensure you are using the correct product for your application.
Stationary & Marine type Diesel Engines
DURON HP and SHP 15W-40’s may be used in diesel-fuelled stationary and marine systems where an SAE 15W-40 diesel engine oil is specified and water separation is not required.