Proven Results

Performance Under the Most Extreme Conditions.

Today's vehicles and driving conditions demand greater performance from your motor oil. Other lubricants are also being challenged to meet more rigorous performance requirements to improve efficiencies and reduce costs.

The performance of Kleen Performance Products lubricants has been proven in both controlled research studies and real world applications. If you need peace-of-mind that your oil will stand up to the most demanding conditions, look no further than the oil that runs in NASCAR races, stands up to the rigors of military combat and outlasts the million mile journey of a heavy-duty truck.

Performing at 200 mph

Performing at 200 mph

Kleen Performance Products protects engines at racetracks across North America. Learn More

Million Mile Engine Test Results.

2,000,000 miles of testing using nothing but Kleen Performance Products Engine Oil.

Kleen Performance Products engine oils meet or exceed all North American standards for engine protection, such as API and SAE. Our EcoPower® products provide the additional benefit of reducing the country's dependence on foreign oil by using twice-refined oil as a renewable resource.

Two trucks. 1,000,000 miles each. Using nothing but Kleen Performance Engine Oil.

In an independent 1,000,000-mile engine test conducted on two trucks under extended drain intervals of more than 40,000 miles, EcoPower HD 15W-40 API CJ-4/SM showed exceptional engine protection - so exceptional that vital engine parts were reused when the 2007 Cummins ISX engines were rebuilt.

First, EcoPower was tested and compared for a half-million miles.

After 500,000 miles, EcoPower HD 15W-40 API CJ-4/SM was as good as or better than the two leading premium HD oils made from crude.

In fully loaded, long-haul service tests conducted by Infineum International LTD, a major global additive company, using trucks equipped with 2007 Cummins ISX 450-horsepower EGR engines, our EcoPower HD 15W-40 CJ-4/SM performed equal to or better than the two leading heavy-duty diesel engine oils. After 500,000 miles with drain intervals exceeding 40,000 miles, EcoPower delivered protection that was second to none, as illustrated in the charts below.

EcoPower maintains 15W-40 API CJ-4 viscosity grade characteristics (12.5 to 16.3 cSt), even after 500,000 miles and 40,000+-mile oil change intervals.

Fleet Chart

EcoPower possesses acid neutralization capability, even after 40,000+ miles of service.

Fleet Chart 2
Fleet Chart 3

After a million miles... EcoPower delivered superior performance.

EcoPower performed so well in 500,000 miles of testing that the test was extended to see how well it would protect the very same engines for 1,000,000 miles. Infineum International LTD maintained the same extended drain intervals. The trucks had only routine maintenance and repairs. After 1,000,000 miles, EcoPower HD 15W-40 CJ-4/SM delivered, yet again, exceptional engine cleanliness, wear protection, total base number and viscosity.

After 1,000,000 miles with drain intervals at over 40,000 miles, EcoPower HD 15W-40 API CJ-4/SM delivered engine protection and cleanliness second to none.

EcoPower maintains viscosity grade characteristics even after 1,000,000 miles and oil change intervals of 40,000+ miles.

Graph 1

After a million miles, EcoPower continued its impressive acid neutralization capability.

Graph 2

Little engine wear - crankshaft, fuel injector camshaft, valve break camshaft, rocker assemblies and connecting rods were used to rebuild engine.

Graph 3


Infineum quote

"In this engine, I see no signs of distress anywhere. In fact, these [original] cams meet the visual guidelines for reusability. And when we rebuild these engines...the cams are going right back in the engines, and they'll be going back into service with these cams, even after a million miles."
Pat Fetterman, Industrial Liaison, Infineum*
*Infineum International Ltd. conducted the test

Big name customers trust our oil for quality and value.

  • U.S. Military, largest on/off-road fleet in the world
  • Roush Fenway Racing, the winningest team in NASCAR history
  • Rental Car Company, largest fleet in North America
  • Big Three Automakers, users of our industrial lubricant