Built for the long haul. Chosen for the work ahead.
Great engine care starts with the right oil and consistent maintenance. Schaeffer’s million-mile teardown offers a look inside a hard-working diesel engine—and a compelling reason to take lubrication seriously.
The oil we use in our own fleet
We use Schaeffer’s oil in our own business fleet of trucks. Those trucks keep our business moving. Choosing oil for them is a practical decision: we want quality lubricants we can confidently put to work.
That experience is part of why we offer Schaeffer’s through USA Motor Oil. We believe in taking care of the equipment that takes care of our business.
Watch the million-mile diesel engine teardown
Schaeffer’s reports that the Caterpillar C-15 featured in this video had traveled 1,055,000 miles, retained its original parts, and used Schaeffer’s Supreme 7000 diesel oil throughout its service. Watch the manufacturer’s teardown to see the engine for yourself.
Watch on YouTube · Read Schaeffer’s description
This is Schaeffer’s featured customer engine, not a truck from our fleet. Its mileage is an individual result, not a guarantee for every engine or proof that oil alone caused that outcome. Engine design, duty cycle and maintenance all matter.
Why we choose Schaeffer’s
We value the range of oils available for different engines and working conditions, the manufacturer’s published technical information, and the ability to choose a lubricant by its specifications—not just the name on the bottle.
Whether you maintain one pickup or a working fleet, start with the viscosity and performance standards your engine requires. Our product pages include package details, technical sheets and safety documents to help you make an informed choice.
Make long-term engine care part of the plan
- Choose the correct oil. Match the engine’s required viscosity and OEM specifications.
- Stay consistent with maintenance. Follow the manufacturer’s service schedule and account for towing, idling and other demanding use.
- Use evidence when changing intervals. A mileage claim in a video is not an oil-change recommendation. Any extended interval needs an appropriate, approved maintenance plan.
Find oil for your next service
Explore our diesel products, gas engine oils and heavy-equipment lubricants. Need help matching a product? Send us your engine or equipment details.
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