Expert Diesel Repair
When It Counts
Heavy diesel engines, commercial fleets, and heavy equipment — we keep your operation running with fast, reliable service on-site or in our Ottawa shop.
Complete Diesel Services
From diagnostics to drivetrain, we handle every aspect of heavy diesel maintenance and repair — in the shop or at your location.
Diesel Engine Repair
Full diagnostics, overhaul, and repair on all major diesel engine brands — Cummins, Detroit, CAT, Paccar, and more.
Fleet Maintenance
Customized maintenance programs to keep your fleet on the road — scheduled service, PM plans, and multi-unit contracts.
Commercial Truck Repair
Heavy-duty truck repair from brakes and suspension to complete engine work — Class 5 through Class 8 vehicles.
Preventive Maintenance
Oil changes, filter services, fluid analysis, and scheduled inspections to prevent costly breakdowns before they happen.
Hydraulic Systems
Hydraulic pump, cylinder, hose, and system repair for trucks, trailers, and heavy equipment.
Electrical Diagnostics
Advanced wiring, ECM diagnostics, and electrical fault-finding using professional-grade scan tools.
Transmission & Drivetrain
Automatic and manual transmission service, driveshaft, differential, and PTO repairs for heavy-duty applications.
Mobile On-Site Service
Can’t bring it to us? We come to you. Mobile repair units available across Ottawa and surrounding areas.
Heavy Equipment Repair
Excavators, loaders, graders, and construction equipment — full diesel repair and maintenance on-site.
Years in
Business
Built on Reputation. Backed by Results.
We’re not a dealership. We’re a working diesel shop that treats your equipment the way you do — seriously. Ottawa fleet managers and owner-operators trust us because we deliver honest work, on time, at fair rates.
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Certified Diesel Technicians
Our techs hold Red Seal and manufacturer certifications — diesel done right the first time.
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Fleet Priority Scheduling
Fleet customers get priority booking and dedicated account management to minimize downtime.
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Mobile Response Capability
When your truck breaks down on the job, our mobile units get to you fast — no tow bill needed.
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Transparent Pricing
No hidden fees. We quote before we wrench — and we stick to it.
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Ottawa-Based & Locally Owned
We live and work here. Our reputation is built in this community — and we take that seriously.
What Our Customers Say
“Scott Diesel has been maintaining our dump truck fleet for years. They’re always honest about what needs to be done and they don’t pad the bill. Our trucks are rarely off the road.”
“Their mobile service saved me thousands. Truck broke down on a job site 40 km from the city and they had a guy out within 2 hours. Back running same day. Can’t say enough.”
“We switched our whole municipal fleet to Scott Diesel three years ago. Downtime has dropped significantly and the reporting they provide for our records is excellent.”