Choose a Store
  • Shop All
  • Replacement Parts
  • Performance Parts
  • Accessories
  • Oil & Fluids
  • Special Offers
  • Speed Perks
  • Advice & How-Tos
  • Project Guides
  • FAQ / Help Desk
Share
Product thumb
Product thumb
Product thumb
Product main large
Loading...
How Would You Like To Get This Item?

Store Pickup

Loading...Loading...Loading...

Same Day Home Delivery

Loading...Loading...Loading...

Home Delivery

Loading...Loading...Loading...
Loading...

Save Up To $20 On Oil Change Bundles

Select Oil + ANY Oil Filter

Loading...

Product Information

Product Details
Part No. 44831
Warranty Details (30 DAY REPLACEMENT IF DEFECTIVE)
Mobil Delvac 1 ESP 5W-40 is an advanced full synthetic oil specially fomulated 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 oustanding protection against oil thickening and degradation, helping to reduce the number of oil changes. Recommeded 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.)

Product Features:
  • 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 low-temperature sludge formation
  • Provides outstanding protection against oil thickening and degradation, helping to reduce the number of oil changes and oil disposal needs
  • Manufacturer Part Number: 122271
Specifications
Container Size:
1 gal

Oil Class:
Diesel Engine

Oil Composition:
Full Synthetic

SAE Oil Weight:
5W-40
Loading...
Loading...
Loading...
No results
Loading...
Feedback
TOP REPLACEMENT PARTS

Order Lookup

Help Desk

Store Locator

In Store Services

Mobile App

CUSTOMER SUPPORT
Accessibility Statement
Contact Us
Forgot Password
Help Desk
In Store Pickup
In Store Services
Order Tracking
Recall Information
Return Policy
Same Day Delivery
© 2025 Advance Auto Parts
Privacy Policy
Terms of Use
Site Map
ADVANCING A WORLD IN MOTION®