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Describe the job once and we'll match it with up to 3 diesel mechanics in Oswald.

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Diesel Mechanics in Oswald NSW

33 diesel mechanics★ 4.8 average from 50 reviews

About these results

Based here first, then diesel mechanics by rating, then related trades.

A business is Featured only when it holds our Featured plan; Featured is a listing plan, not a rating.

33 diesel mechanics based in or serving Oswald; listings updated 7 Oct 2026.

  1. Based nearby, serving Oswald

    These businesses aren't based in Oswald but list it as a service area.

  2. CRD Automotive Solutions

    Mechanics, 4x4, Diesel Mechanics

    Based in Rutherford NSW · serves Oswald

    Directions View profile Serves this area Est. 2015

    Automotive workshop in Rutherford, NSW for car servicing, performance modifications and dyno tuning.

    • Performance Modifications
    • Dyno Tuning
    • Car Servicing

    Based in Rutherford NSWServes Oswald

    Closed · opens 8:00 am

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  4. Express Lube

    Mechanics, Auto Electricians, Diesel Mechanics

    Based in Cessnock NSW · serves Oswald

    Directions View profile Serves this area

    Express Lube is a Cessnock, NSW mechanic for oil changes, diesel engine work, auto electrical jobs and vehicle checks.

    • Oil change
    • Vehicle and pre-purchase inspections

    Based in Cessnock NSWServes Oswald

    Closed · opens 8:00 am

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  5. Hunter Automotive Solutions

    Mechanics, Auto Electricians, 4x4, Diesel Mechanics

    Based in Mitchells Flat NSW · serves Oswald

    Directions View profile Credentials listed Serves this area Est. 2016

    Mechanical workshop in Mitchells Flat, NSW for logbook servicing, diesel fault diagnostics, suspension work and DPF cleaning.

    • Diesel Fault Diagnostics & Repairs
    • Vehicle Suspension Repairs & Services
    • Minor Logbook Servicing

    Based in Mitchells Flat NSWServes Oswald

    Closed · opens 8:00 am

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  6. KPR Diesel Performance

    Mechanics, Auto Electricians, Diesel Mechanics

    Based in East Branxton NSW · serves Oswald

    Directions View profile Serves this area

    Diesel performance specialist in East Branxton, NSW for ECU remapping, vehicle tuning and on-site truck and machinery servicing.

    • Performance ECU Remapping
    • Vehicle Tuning
    • Onsite Vehicle, Machinery, and Truck Ser…

    Based in East Branxton NSWServes Oswald

    Closed · opens 7:00 am

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  7. Peak's Truck Repairs

    Mechanics, Diesel Mechanics

    Based in Weston NSW · serves Oswald

    Directions View profile Serves this area

    Mobile truck and bus repair service based in Weston, NSW, covering Cessnock, Maitland and nearby areas.

    • Truck and bus repairs

    Based in Weston NSWServes Oswald

    Open now · 24 hours

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  8. Stoney Creek Diesel Service

    Auto Electricians, Diesel Mechanics

    Based in Bridgman NSW · serves Oswald

    Directions View profile Serves this area Est. 2022

    Mobile machinery repairer in Bridgman, NSW, working on farm, earthmoving, irrigation and haymaking gear.

    • Farm Machinery
    • Earthmoving Machinery
    • Irrigation Equipment

    Based in Bridgman NSWServes Oswald

    Closed · opens 8:00 am

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  9. Tefol

    Mechanics, Auto Electricians, Tyres, Diesel Mechanics

    Based in Rutherford NSW · serves Oswald

    Directions View profile Serves this area

    Tefol in Rutherford, NSW handles light and heavy vehicle repairs and servicing, mobile line boring and milling, and wheel alignment and balancing.

    • On-site services
    • Oil change

    Based in Rutherford NSWServes Oswald

    Open now · 24 hours

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  10. Weston Smash & Service Centre

    Mechanics, Auto Electricians, Tyres, Diesel Mechanics, Towing

    Based in Weston NSW · serves Oswald

    Directions View profile Credentials listed Serves this area Est. 1986

    Smash and service centre in Weston, NSW for crash repairs, logbook servicing, brake and clutch work and roadworthy inspections.

    • Brake Repairs
    • Roadworthy Inspections
    • Log Book Services

    Based in Weston NSWServes Oswald

    Closed · opens 7:30 am

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No diesel mechanics on this page match all of these filters. Untick one, or clear the filters to see all 9 on this page.

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Tell us about the job and we'll match it with up to 3 diesel mechanics in Oswald. Your contact details go only to businesses on a paid plan here, and after you send we tell you which businesses got them. Free, no obligation.

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Choosing diesel mechanics in Oswald

Diesel mechanics for diesel servicing and repairs, injectors and fuel systems, DPF cleaning and truck repairs. Mechanics Directory lists 33 diesel mechanics in Oswald NSW. Listings show the services each business offers, and a rating where there is one.

What to check before you book

Getting started

  1. Describe the job. Your vehicle's make, model and year, what's wrong or what it needs, and when you need it done.
  2. Shortlist two or three. Use the filters above to narrow this page by listed credentials and website.
  3. Compare quotes. Or send one request and we'll match it with up to 3 diesel mechanics.
  4. Agree in writing. Confirm the price, what's included and when the vehicle will be ready before work begins.

Frequently asked questions

How do I choose between diesel mechanics in Oswald?

Compare two or three. Ask whether they work on your make, and on light vehicles, trucks or machinery, whether they can come to you, and for a written quote for parts and labour. A business that is owner verified on Mechanics Directory has confirmed it runs the listing.

How much does a diesel service cost in Oswald?

It depends on the vehicle or machine, the oil and filters it takes, and whether the injectors, turbo or DPF need work. Asking two or three local diesel mechanics for a written quote is the quickest way to see the going rate in Oswald.

Do diesel mechanics need to be licensed?

Licensing depends on the work and the state. Modifications such as GVM upgrades need certifying under your state's rules, and outside Western Australia and the Northern Territory, modifications to heavy vehicles over 4.5 tonnes are regulated by the National Heavy Vehicle Regulator. In New South Wales, a business that repairs vehicles needs a motor vehicle repairer licence from NSW Fair Trading, and the people doing the work generally need a tradesperson certificate (some minor work is exempt). You can check a licence on the NSW Government's online licence check. In New South Wales, autogas (LPG) work is regulated under the Gas and Electricity (Consumer Safety) Regulation 2018; ask for the autogas licence. Listings marked "Credentials listed" show a licence, accreditation or membership on the business's profile. We don't check it, so confirm it with whoever issued it.

What is DPF cleaning?

A diesel particulate filter (DPF) traps soot from the exhaust and burns it off on longer runs at highway speed. Lots of short trips can stop that happening, so the filter blocks and a warning light comes on. A diesel mechanic can check the filter and clean it or run a forced regeneration.

What does "serves this area" mean?

Some businesses are based in a nearby suburb but cover this area, including mobile mechanics and towing services that come to you. On suburb pages we list businesses based in the suburb first, then the ones that say they serve it.

How do free quotes work?

Tell us about the job once. We match your request with up to 3 diesel mechanics near you. A business on a paid plan here gets it with your name and contact details and can contact you directly. A business on the free plan sees the job and your suburb but not your details, so it can't contact you unless it upgrades. A business that hasn't claimed its listing sees your request only once it claims. After you send, we tell you which applies to each business. It's free and there's no obligation.