Our mission is to provide diagnostic and repair at dealership quality with family values.

Quality HD Diesel strives to keep your truck(s) up and running. Our team of factory trained and certified technicians have the skills and expertise to get the job done right the first time. Every customer becomes a member of the Quality HD Diesel family and are treated with respect. We stand by our name and provide quality care to our customers and their units, every time.

24/7 Roadside Assistance, INSIGHT & Davie 4 Software, Diagnostic Testing and Repair, Preventative Maintenance, Engine Repairs, Transmission Repairs, Brake Services, certified FMVSS CNG and LNG inspections and/or repairs, and more.

Best One Fleet Service of Gas City provides all of east-central and northeastern Indiana with top-notch workmanship in the heavy truck repair industry. Our primary focus is to help you minimize downtime and keep your business moving forward with the products and services you need, always in a timely manner. We offer on-site PM services, advanced engine and aftertreatment diagnostics, mobile welding, mobile DOT inspections, electrical diagnostics, major mechanical repair, and full truck/trailer alignments.

Diagnostic Software: Cummins Insite, Paccar, Detroit, Eaton, Allison, International, and more.

We are a small family owned trucking company with three emergency roadside techs for roadside repair, mobile or in shop work. We do our best to help fleets with fast response times and fair prices. We do all basic repairs both on the roadside and in shop. We stock over 200k in parts and tires including recaps, Michelin, Firestone, gladiator, and Yokohama brands. We service all brands of trucks and trailers and have the ability to make custom air and fuel lines. Our four dedicated Roadside repair trucks and techs are available 24/7/365. We also offer in shop repair at our Fort Wayne, IN facility.