SERVING SAN ANTONIO & SOUTH TEXAS FOR 50+ YEARS

Duffin Diesel started in 1970, right in the heart of San Antonio, Texas.

The Legacy of Duffin Diesel

Russell, Myrt and Donald Duffin Family Photo

Our family-owned business was founded by Myrt and Russell Duffin, a passionate and skilled husband and wife duo.

Russell, a seasoned machinist with a keen eye for precision, and business-savvy Myrt, had dreams of creating a lasting legacy in the world of engine servicing.

Over the years, Duffin Diesel has consistently expanded our engine repair and maintenance capabilities. From our humble beginnings in basic machine work, we have developed into experts capable of handling intricate projects like the Caterpillar 3412 engine block. Our commitment to keeping pace with advancements in equipment and technology has been a driving force behind our success.

In a strategic move that solidified our position in the diesel industry, Duffin Diesel continues to invest in state-of-the-art machinery, including the Rottler EM79 and Serdi 4.5. These cutting-edge tools have allowed us to offer unparalleled precision and efficiency in our engine work.

Photo Collage of New and Old Pictures Around the Duffin Diesel Shop

Duffin Diesel has earned our reputation as specialists in over-the-road diesel engines, industrial machinery, and agricultural equipment. Our dedication to quality, combined with our ability to adapt to the ever-changing demands of the industry, has made us a trusted partner for trucking companies, manufacturers, and farmers alike.

Today, as we approach our 54th anniversary, Duffin Diesel stands as a testament to the enduring values of hard work, dedication, and the relentless pursuit of excellence. 

Myrt, Russell, and now Donald Duffin's vision has not only been realized but continues to thrive to this day. 

The legacy of Duffin Diesel continues to power the engines that drive Texas' industries and agriculture. Thereby ensuring that we remain at the forefront of innovation in diesel engine servicing for years to come.