Stands up to any test.


Truck Fleets

EcoPower CK-4 Heavy-Duty Diesel Engine Oil gives your fleet an optimum defense against engine wear, piston deposits, catalyst poisoning and oxidative thickening. When put to the test in fully loaded, long-haul service, EcoPower CK-4/SN 15W-40 performs equal to or better than leading High Performance Diesel engine oils under extended drain conditions.

Exceptional oil performance.


In the most comprehensive study ever completed on the performance of re-refined heavy-duty diesel engine oil versus conventional oil, EcoPower outperformed the two leading conventional brands it was tested against.

The results of the grueling 500,000 mile fleet test with extended drain intervals of 40,000 miles were illuminating.

View Test Results 

Better fuel economy.


EcoPower Heavy-Duty Diesel 10W-30 CK-4/SM helps fleets improve fuel economy up to 1.5%*, delivers better cold weather starts, and it protects engines and protects the environment.

A fleet using 8 million gallons of diesel fuel at $4 per gallon could save up to $480,000. This re-refined engine oil has also been approved by or meets the requirements of Cummins, Caterpillar, Detroit Diesel, Mack, Mercedes-Benz, Navistar and Volvo.

*Compared to HD 15W-40 CJ-4

Maintains protective properties.


Fleet Trucks Bottle

In the end, EcoPower held its grade, while the two conventional brands fell out of grade. On top of that, EcoPower possessed far greater acid neutralization capabilities than the conventional brands. All of which means more protection for more miles for your fleet.

That’s not us saying so─ that’s an independent third-party saying so.


Greater soot control.


EcoPower CK-4 HDDEO also has twice the soot control of previous API service category oils. This is achieved by dispersing soot into finer particles so more soot is held in suspension and kept safely away from vital engine parts.

This kind of performance can be counted on in a wide range of operating conditions and temperatures.

EcoPower is available in the following grades of Heavy-Duty Diesel Engine Oil, all of which are compatible with previous-year engines and other API-licensed products of the same grade.

  • 15W-40 CK-4/SN
  • 10W-30 CK-4

We also offer engine oil analysis services and a complete array of ancillary products for a fleet.