Mobil Delvac HDEO 15W-40
Mobil Delvac HDEO 15W-40 is a synthetic blend diesel engine oil for high-speed, four-stroke heavy-duty engines. Its formulation supports the durability of diesel particulate filters (DPFs) and other exhaust aftertreatment systems.
Protection and performance
Mobil’s Delvac HDEO 15W-40 product information lists API CK-4, CJ-4, CI-4 PLUS, CI-4, and CH-4 among the performance requirements this oil meets or exceeds. The 15W-40 grade also carries approvals from engine manufacturers including Cummins, Detroit, Ford, Mack, and Volvo.
Mobil recommends this oil for compatible heavy-duty diesel applications, including low-emission engines with exhaust gas recirculation (EGR), as well as older and naturally aspirated diesel designs.
Choosing the right diesel oil
Your engine’s required viscosity and approvals determine the right lubricant. Ask our team whether Mobil Delvac HDEO 15W-40 matches your vehicle’s specifications and emission-control equipment.
Included with your oil change
Our full-service oil change includes up to five quarts of the selected diesel lubricant, a new oil filter, and a multi-point vehicle inspection. Windshield washer fluid, tire-pressure checks and adjustments as needed, and applicable chassis lubrication are included. Engines requiring more oil receive the additional quantity for an extra charge.
Recommended service interval
Mobil 1 Lube Express of Michigan recommends service up to 3,000 miles for this option. Diesel maintenance needs vary with engine design, driving conditions, and vehicle use. Follow the oil-change schedule and specifications required by your engine manufacturer.