Choose Chevron Delo Heavy-Duty Diesel Engine Oils

Chevron heavy-duty engine oil engineered to deliver industry-leading durability, reliability, and efficiency developed to work in synergy with the changing conditions of diesel engines.

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Shop Chevron Delo Heavy-Duty Diesel Engine Oils

Delo 600 ADF Synblend

Delo 600 ADF Synblend

BUY SAE10W-30

BUY SAE15W-40

  • Extends DPF cleaning intervals by 2.5 times
  • Extended drain and oil change interval potential of up to 1.7 times*
  • Fuel economy improvement potential of up to 4.2%**
  • Developed for use in all diesel engines
Delo 400 XSP Synthetic

Delo 400 XSP Synthetic

BUY SAE5W-40

BUY SAE15W-40

  • Improves valve train and piston ring wear protection
  • Extends drain and oil change interval potential up to 2 times*
  • Fuel economy improvement potential of up to 1.6%**
  • For use in diesel and gasoline engines
Delo 400 XLE Synblend

Delo 400 XLE Synblend

BUY SAE10W-30

  • Increases scuffing resistance and protection against light-duty power cylinder failure by reducing low-speed pre-ignition (LSPI)
  • Extends drain and oil change interval up to 1.5 times*
  • Fuel economy improvement potential of up to 1.2%**
  • For use in diesel and gasoline engines
Delo 400 XLE SB Synblend

Delo 400 XLE SB Synblend

BUY SAE15W-40

  • Extends drain and oil change interval up to 1.5 times
  • Improves engine life and cleanliness
  • Exceptional deposit control
  • Long drain performance

Break with Convention - A Simplified Product Line

At Delo, our focus has always been to innovate with you and your business’s needs in mind. And to move forward, we have to embrace change.

That’s exactly why we’re breaking with convention and reimagining our selection of Heavy-Duty Engine Oil products. By moving to a simplified synthetic blend and synthetic-only portfolio, we’ll continue to deliver a promise of supply reliability, affordability, and the same outstanding performance you expect and deserve from Delo.

By breaking with convention, we’ll move forward together, stronger.

Explore the Benefits of Delo 600 ADF

Delo 600 ADF CK-4 with OMNIMAX™ Technology delivers maximum system protection to both the engine and the emissions system. This all encompassing protection helps drastically reduce the rate of DPF clogging to deliver extended DPF service life and industry-redefining fuel economy retention.

  • Superb Long Drain Performance
  • Minimized Operating Costs
  • Maintain Fuel Economy Longer

Explore the Benefits of Delo 400 XSP

Delo 400 XSP with ISOSYN Advanced Technology® is a premium full-synthetic heavy-duty diesel engine oil, specially formulated for engines operating under severe service and a wide range of climatic conditions.

  • Promotes Consistent Cold Engine Starting
  • Improved Fuel Economy
  • Excellent Emission Control

Explore the Benefits of Delo 400 XLE

Delo 400 XLE with ISOSYN Advanced Technology is a synthetic blend fuel economy and mixed fleet engine oil, specifically formulated for on-highway applications.

  • Exceptional Deposit Control
  • Improved Fuel Efficiency
  • Minimized Operating Costs

*Extended oil drain interval (ODI) potential is based on the average of US Class 8 engine manufacturers’ recommendations. Results will vary depending upon vehicle/equipment type, fuel consumption, maintenance practices, temperature, and variable driving/operating conditions. Consult the engine/vehicle OEM and Chevron before implementing extended ODIs, especially if the engine/vehicle is under warranty.

**Improvement vs. SAE 15W-40 oil in class 8 diesel engine bench testing. Actual savings will vary depending upon vehicle/equipment type, load, temperature, and variable driving/operating conditions.