Heavy-duty diagnostics • repair • performance

Keeping your diesel fleet working—every day, all year.

Supreme Diesel specializes in heavy-duty truck and equipment diagnostics, repair, and performance solutions. From engine work and emissions to driveline and cooling systems, we keep your units earning, not sitting.

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Fleet-focused Priority scheduling for commercial units.
Diagnostics first Modern tooling, clear reporting, no guesswork.
Located in Saskatchewan Serving Saskatoon, Warman, and surrounding area.
Services

What Supreme Diesel does best

Built around real-world fleet needs: accurate diagnostics, clear communication, and repairs that hold up to Saskatchewan conditions.

Engine & driveline repair

Complete mechanical support for heavy-duty trucks and equipment—focused on uptime and long-term reliability.

  • Engine troubleshooting and repair
  • Clutch, transmission, and driveline work
  • Cooling system diagnostics and repair

Diagnostics & ECM reporting

Modern diagnostic tooling with clear, written findings so you know exactly what’s going on with your unit.

  • Fault code tracing and root-cause analysis
  • ECM data review and reporting
  • Pre-purchase and pre-trip inspections

Emissions & aftertreatment

Practical solutions for DPF, DOC, SCR, and related systems, with a focus on proper function and reduced downtime.

  • Aftertreatment diagnostics and repair
  • Sensor and harness troubleshooting
  • System cleaning and maintenance plans

Fleet maintenance programs

Structured service plans tailored to your fleet size, duty cycle, and operating environment.

  • Scheduled service and inspections
  • Service history tracking and reminders
  • Priority booking for fleet customers
About

Supreme Diesel in a few words

A locally owned, independent shop focused on honest diagnostics, clear communication, and solid mechanical work.

Supreme Diesel was built around a simple idea: heavy-duty owners deserve a shop that treats their equipment like it’s their own. That means taking the time to diagnose properly, explaining options in plain language, and standing behind the work.

Whether you run a single truck or a growing fleet, our goal is to keep you moving with as little disruption as possible. We plan repairs around your schedule, communicate clearly, and document what we find so you’re never guessing.

Diagnostics-first approach We start with data and inspection, not parts swapping.
Fleet-friendly communication Clear notes, photos, and updates so you can make decisions quickly.
Local, independent shop Rooted in Saskatchewan, serving regional trucking and equipment owners.
Contact

Book your next visit

Use the form below or call directly to schedule diagnostics, repair, or maintenance for your truck or equipment.

Request an appointment

Fill out a few details about your unit and we’ll follow up to confirm a time and discuss next steps.

Phone: (306) 000-0000