--- title: Mobil Delvac 1 ESP Motor Oil 5W40 Full Synthetic Heavy Duty Diesel 1 gal (US) url: https://www.napaonline.com/en/p/MOB127863 description: Buy Mobil Delvac 1 ESP Motor Oil 5W40 Full Synthetic Heavy Duty Diesel 1 gal (US) - MOB 127863 online from NAPA Auto Parts Stores. Get deals on automotive parts, truck parts and more. date: 2026-09-24 --- ### [Mobil Delvac 1 ESP Motor Oil 5W40 Full Synthetic Heavy Duty Diesel 1 gal (US)](https://www.napaonline.com/en/shop/oil-chemicals/motor-oils/diesel-heavy-duty-oils/diesel-heavy-duty-oil/349629005) ![Mobil Delvac 1 ESP Motor Oil 5W40 Full Synthetic Heavy Duty Diesel 1 gal (US)](https://media.napaonline.com/is/image/GenuinePartsCompany/312021129/?format=webp&preset=webprooflarge) ![Mobil Delvac 1 ESP Motor Oil 5W40 Full Synthetic Heavy Duty Diesel 1 gal (US)](https://media.napaonline.com/is/image/GenuinePartsCompany/312021128/?format=webp&preset=thumbnail64) Vehicle Info Needed Click To Ensure Exact Fit Rating: 4.8 (39 reviews) Write a review # Mobil Delvac 1 ESP Motor Oil 5W40 Full Synthetic Heavy Duty Diesel 1 gal (US) Part #: MOB 127863 Line: Mobil Oil Price: $47.99 / Each This item is not available for Sale. Apologies for any inconvenience. 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If the item is not in stock at your local store, then your store associates can order the item for you. We apologize for the inconvenience. Thank you for shopping at NAPA! ## Vehicle Fitment Vehicle Info Required to Guarantee Fit: ** Select a vehicle for Exact Fit ## Features & Benefits Warranty Mobil Delvac 1 ESP 5W-40 is an advanced full synthetic oil specially formulated for diesel engines that works to extend engine life, fuel economy potential, and deliver long drain capability for modern diesel engines operating in severe conditions. Mobil Delvac 1 ESP helps to deliver exceptional performance with state-of-the-art technology to reduce engine deposits and sludge formation, as well as provide anti-wear and anti-scuff engine control. Provides excellent low-temperature performance for increased oil flow to critical engine surfaces at startup. Works to deliver outstanding protection against oil thickening and degradation, helping to reduce the number of oil changes. Recommended for: most engine generations up to the latest and most sophisticated high-performance diesel engines with turbocharger, direct-injection and low-emission designs, on-and-off highway applications operating in both high-speed/high-load and short-haul pick-up/delivery and in severe low-speed/heavy-load conditions, heavy-duty diesel engines using low-sulfur diesel fuels and many biodiesel fuel formulations, naturally aspirated and turbocharged, diesel-powered equipment, diesel-powered equipment from American and European builders, and refrigeration units. Meets or exceeds the requirements of API CK-4, CJ-4, CI-4 PLUS, CI-4, CH-4, SN, SM. (Compared to an SAE 15W-40 engine oil. Actual savings are dependent on vehicle/engine type, outside temperature, driving conditions and your current engine oil viscosity.) - Advanced full synthetic diesel engine oil that helps to extend engine life and fuel economy potential of modern diesel engines operating in severe conditions - Formulated to help high-performance diesel engines with turbocharger, direct-injection, low-emission designs, and low-sulfur and biodiesel fuel formulations - Provides excellent oxidation performance, anti-wear, and anti-scuff properties that helps to reduce engine deposits and keep engines running reliably - Excellent low-temperature performance for increased oil flow to critical bearing surfaces at startup and controlling sludge formation - Provides outstanding protection against oil thickening and degradation, helping to reduce the number of oil changes and oil disposal needs - Formulated in SAE 5W-40 viscosity grade ## Specifications | | | | --- | --- | | Container Size | 1 gal (US) | | Synthetic | Yes | | API Rating | CK-4,CJ-4,CI-4 Plus,CI-4,SM,SN | | Manufacturer Part Number | 127863 | | High Mileage Formula | No | | Sub Brand | ESP | | VMRS Code | 053999032 | | Grade | 5W-40 | | Weight Rating | 5W40 | | Brand | Mobil Delvac 1 | | Motor Oil Style and Type | Full Synthetic Heavy Duty Diesel | | Contents | Full synthetic heavy duty diesel oil | | Approved Motor Oil Specification | Cummins CES 20081,Cummins CES 20086,DFS 92K218,DFS 93K222,Mack EOS-4.5,Renault RLD-3,VDS-4.5 | | Contains VOCs | Yes | | Meets Motor Oil Specification | ACEA E7,CAT ECF-3,DAF Extended Drain,JASO DH-2 | | SDS Required | Yes | Buyer's Guide ## Safety Information ## Vehicle Fitment Guide | Make | Model | Year(s) | |-----------|---------------------------------------------|--------------| | Audi | A6 | 1995 -1999 | | Audi | A4 | 1996 -1999 | | Audi | 100 CS | 1994 -1994 | | Audi | S6 | 1995 -1997 | | Audi | Cabriolet | 1994 -1998 | | Audi | S4 | 1994 -1994 | | Audi | A8 | 1997 -1999 | | Audi | 90 | 1994 -1995 | | Chevrolet | Express 4500 | 2009 -2016 | | Chevrolet | Silverado 3500HD 1 Ton - 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