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For Consumers

Whether you drive a diesel car or operate a big rig, you can rely on the diesel additives from Power Service for year-round engine performance improvement, trouble-free winter operation and proper fuel tank hygiene. We are the diesel experts and any size diesel engine will run better with Power Service.

All Consumers

For Industries

From some of the largest fleets in North America to large construction and mining operations, commercial industries rely on Power Service diesel additives to provide year-round diesel engine performance improvement, trouble-free winter operability and proper fuel tank hygiene.

For Industries

Learning Center

Find articles, videos, and helpful tips for maintaining your diesel engine. You'll also find product information, useful resources, and advice from our expert team.

Visit The Learning Center

Lonnie Stefekos

Prior to joining Power Service in 1990, Lonnie Stefekos had more than 25 years of experience working in the heavy-duty equipment industry as an automotive jobber in Northern New Hampshire and also as a district sales manager for an industrial lighting company in Syracuse, NY. Today, Lonnie provides sales, distributor development, technical support, and leads Power Service’s brand expansion for the Northeast Region, including New York, New Jersey, Eastern Pennsylvania and all six New England states along with the eastern Canadian provinces.

Lonnie is a longtime member of the New Hampshire Good Roads Association, the New England Convenience Store Association, and SIGMA.

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Performance, Winterization, and Fuel Tank Hygiene features
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