• Mobile mechanical service available across North Queensland
  • Servicing all diesel makes, models & machinery types
  • Fully qualified & ARC-approved technicians you can trust

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The Hood of a Car is Open and the Engine is Visible — OG Diesel NQ in Garbutt, QLD

Townsville Diesel Mechanic

At OG Diesel NQ in Townsville, diesel servicing isn’t just a checklist — it’s the backbone of vehicle performance, fuel efficiency and long-term reliability. Whether you're running a ute, a commercial fleet or a piece of machinery that can't afford downtime, you need a diesel mechanic who knows how to keep things running smoothly. Our workshop is fully equipped to handle everything from routine servicing and diagnostics to complex rebuilds, all carried out to manufacturer standards. It's about saving you time, reducing operating costs and keeping your vehicle working the way it should.


  • All makes & models covered
  • Preventative servicing reduces breakdowns
  • Qualified diesel experts with industry experience


Our team is trade certified, detail focused and ready to get you back on the road or site with confidence. Book your next service with OG Diesel NQ by calling 07 4426 3771 today.

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Servicing, Repairs & Diagnostics

Diesel vehicles demand a different level of care. With high-compression engines, complex fuel systems and heavy-duty components, you need specialists who understand how to keep them running at peak condition. From changing filters and fluids to diagnosing injector issues and turbo faults, a tailored approach is essential.


At OG Diesel NQ, we offer full diesel servicing for individual drivers, fleet managers and heavy machinery operators — and we don’t cut corners. Whether it’s scheduled maintenance or chasing down a strange knock or loss of power, we work to get it right the first time.


  • Manufacturer logbook servicing
  • Fuel system testing & repairs
  • Turbocharger & cooling system servicing


Regular diesel maintenance improves performance and helps avoid costly engine repairs down the line.

A Close Up of the Engine of a Car — OG Diesel NQ in Garbutt, QLD

Frequently Asked Questions

  • What is included in a standard diesel vehicle service?

    A standard diesel service generally includes changing the oil and all filters (oil, fuel, air and cabin), checking fluid levels, inspecting belts, hoses, brakes and suspension, testing the battery and electrical system, and scanning for fault codes. Some services may also include road testing and cleaning, depending on the workshop and service interval. Regular servicing helps maintain engine efficiency, fuel economy and vehicle safety.

  • Why is diesel engine servicing different to petrol vehicles?

    Diesel engines operate at higher compression ratios and generate more torque, which means they endure more internal stress. They also rely heavily on clean fuel systems and properly functioning turbochargers. Unlike petrol engines, diesel systems are sensitive to fuel quality and require precise timing and pressure regulation. This makes specialist knowledge and correct maintenance procedures vital to prevent premature wear and costly breakdowns.

  • What are signs that my diesel vehicle needs repair?

    Common signs include rough idling, increased exhaust smoke, reduced fuel economy, difficulty starting, knocking or rattling noises, loss of power or warning lights on the dashboard. These issues can be caused by problems such as blocked fuel injectors, turbo faults, leaking hoses, faulty glow plugs or issues with the diesel particulate filter (DPF). Prompt diagnosis and repair are crucial to avoid further engine damage.