J.J. Diesels keeps Freightliner, Kenworth, Peterbilt, Volvo and Mack trucks — and the fleets that run them — on the road in Fort McMurray and the surrounding oil sands region. Red Seal certified mechanics, shop or roadside, 24 hours a day.

From engine diagnostics to trailer welding, our mechanics carry factory-level training on the trucks and equipment that keep the oil sands moving.

A decade of hands-on experience on the exact makes that run this region — Freightliner, Kenworth, Peterbilt, Volvo and Mack.
Breakdowns don’t wait for daylight. Neither do we — call any hour for shop or roadside dispatch.
We stock and source parts that meet OEM standards, priced to keep your trucks running without surprises.

CVIP-ready inspections and documentation.
Rapid dispatch to reduce fleet downtime.
Called them at 2am when a Kenworth broke down on Highway 63. Mechanic was on-site fast and had us moving again before sunrise.
Honest diagnostics and fair pricing on our whole fleet’s preventive maintenance. No upsells, just straight answers.
Our go-to shop for anything Peterbilt or Volvo. Red Seal techs who actually explain what they find.

A duty-cycle guide to preventive maintenance intervals for heavy trucks running in and out of Fort McMurray.
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The early warning signs — from rough idle to black exhaust — that mean it’s time for a diagnostic check.
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Simple habits that reduce breakdowns and extend the life of your fleet’s engines and drivetrains.
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Shop Bay Doors
Engine Diagnostics
Mechanic At Work
Before / After: Brakes
Heavy Equipment Bay
Service Truck FleetShop repairs, mobile dispatch and fleet maintenance across Fort McMurray, 24 hours a day, 7 days a week.
Call (825) 963-5911