STL Diesel, established in 2011 in Crystal City, Missouri, is a family-owned and operated shop known for its expertise in diesel services. They specialize in DPF service and cleaning, diesel performance, modifications, and add-ons. The shop is celebrated for its honest and high-quality work, performed by trained technicians using the latest diagnostic and service equipment. Customers appreciate that STL Diesel can repair issues that other shops cannot, such as diagnosing faulty injectors and fuel in coolant, and successfully clearing trouble codes on diesel trucks. The team is known for excellent workmanship, great customer service, and fair prices. Many clients have praised the shop for their quick and reliable repairs, even when dealing with complex problems. They are also willing to go the extra mile, fitting in urgent work and providing detailed pre-purchase inspections. Overall, STL Diesel is highly recommended for diesel needs, with customers trusting their knowledge, professionalism, and fair pricing. The shop’s commitment to integrity and customer satisfaction has earned it a strong reputation in the community.
Where other shops just plug a scanner in and confidently fix whatever code pops up. These guys actually wanted to find the root cause of my problem and get it fixed even more than I did. Thanks!
October 2025
Stl diesel did a great job with my diesel and sucessfully deleted all trouble codes. They know what there doing and are reasonable in price and easy to deal with. Highly recommend STL Diesel for your diesel needs. Satisfied Customer
September 2025
Great service. Affordable prices. I was in a bind with needing some work done. They went above and beyond to fit my truck in and get it done!!! Highly recommend.
