About Cambeck Petroleum

A Wisconsin Legacy Since 1969

Cambeck Petroleum began in 1969 when James Campbell Sr. and Lee Loundenbeck joined forces to create what would become one of southern Wisconsin’s most trusted names in fuel and petroleum distribution. What started as a single Main Street Beverage and Gas location quickly evolved into a growing network of service stations dedicated to quality fuel, honest service, and community commitment.


The early years saw rapid expansion. The second Cambeck location opened at the Five Points intersection in Janesville, followed by Campbell’s One Stop at Highway 14 and A, a familiar name to locals for decades. By 1986, the company made a pivotal move — closing the One Stop to focus on a major new project: developing the TravelCenters of America (TA) location at the intersection of I-90 and Highway 14.


Through the 1970s and 1980s, Cambeck’s footprint expanded beyond Janesville, operating two locations in Delavan and two in Lake Geneva. These sites helped cement the company’s regional presence and reputation for reliable fuel service across southern Wisconsin.


The TA location, expanded in 1995 into a full-service truck stop, became a flagship facility and a cornerstone of Cambeck’s business model — blending convenience, modern amenities, and dependable fueling services for both professional drivers and travelers alike.


During the 1990s, Cambeck Petroleum continued to grow strategically, acquiring TigerMart and adding even more capacity and retail reach under its brand portfolio.

Gas station and shop on a roadside. Gray building, gas pumps, cars, and a blue Mobil sign under an overcast sky.
Mobil gas station with price sign; cars on street, overcast day.
Gas station with a tall

Original Five Points Gas Station in Janesville, Wisconsin

Spur gas station with black canopy, cars parked, and a dark sedan in front.

Expanded Five Points Gas Station in Janesville, Wisconsin

Built on Family Values & Trusted Partnerships

More than half a century later, Cambeck Petroleum remains rooted in the same values that guided its founders — hard work, integrity, and service to the community. The company continues to evolve, partnering with ExxonMobil to deliver high-quality fuels and dependable distribution for dealers and retail partners across Wisconsin.

From a single gas station on Main Street to a multi-site petroleum enterprise, Cambeck Petroleum’s story is one of vision, endurance, and Wisconsin pride — a testament to what dedication and local partnership can build.

Ready to Grow With Cambeck?

Looking to rebrand to Exxon™ or Mobil™, improve supply reliability, or open a new site? Cambeck Petroleum will build a distribution and branding plan that fits your goals.


Contact Cambeck Petroleum

Request a dealer packet, pricing, and a site review today.