A diesel specialist workshop in southern Adelaide
If you want a diesel mechanic in Adelaide who specialises in diesel, you want a workshop built for it. Common-rail diesel utes and wagons (the Ranger, Hilux, D-Max, Triton, Navara, BT-50, LandCruiser, Colorado, Amarok, Prado and GWM Cannon) get the best results from diesel-specific knowledge and equipment: an in-house chassis dyno, DPF and injector cleaning gear, and the experience to tune and diagnose modern diesels properly.
We are that workshop, and we are built on 2 pillars. First, a diesel-performance house: custom diesel tuning and ECU remapping, DPF and EGR work, and diesel cleaning. Second, a trustworthy everyday workshop: RAA-approved log-book servicing that keeps your new-car warranty intact, loan cars on request, and honest pricing. We are at 31 Aldenhoven Road, Lonsdale, serving southern Adelaide, with over 30 years of hands-on diesel and petrol experience. Tell us what your diesel is doing and we will tell you straight what it needs.
Diesel services we offer in Adelaide
One workshop for the lot, leaning hardest into the 2 areas Adelaide diesel owners search for most: diesel tuning and diesel cleaning. Every job is photographed and we show you the photos when you come in.
Diesel tuning & ECU remapping
Custom dyno-tuned power, torque and economy, reversible with the factory map saved.
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Dyno tuning
Tunes written and load-verified live on the dyno, not an emailed-in carpark file.
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4x4 diesel tuning
More pulling power and cooler EGTs for towing and touring.
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DPF cleaning from $550
Restore a blocked filter instead of replacing it, and stay legal and roadworthy.
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Diesel injector & fuel-system cleaning
Elite 2-micron cleaning and diesel-bug treatment for rough-running diesels.
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Log-book & general servicing
RAA-approved servicing that protects your new-car warranty, with loan cars on request.
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Transmission & Stocklock lock-up kits
Transmission service, gearbox repairs and the fuel-saving Stocklock kit.
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ECU=Shop modules
For late-model diesels with a locked ECU that can't be remapped.
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4x4 and touring diesels, set up as one build
Most of the diesels we see are working utes and touring 4WDs, and they get the best result when the tune, suspension, canopy and 12V power are set up together. We do all 4 in the same Lonsdale workshop:
- 4x4 diesel tuning on our in-house dyno, for more torque when towing and loaded. See the real Isuzu D-Max ECU remap and Toyota Hilux ECU remap results.
- Tough Dog and Dobinsons 4x4 suspension, rated to the weight you actually carry.
- SJS ute canopies, colour-coded and fitted in the workshop.
- KickAss dual battery and 12V systems, wired in and fused properly.
Diesel diagnosis: injectors, fuel, DPF and EGR
When a diesel is down on power, smoking, using more fuel or showing a warning light, we start with a proper diagnosis. We scan the engine computer, read the live fuel and injector data, and check the DPF and EGR before recommending anything, so you know exactly what the vehicle needs and why.
Plenty of injector and fuel faults come good with a clean rather than new parts. Our diesel injector cleaning and fuel-system service treats diesel bug and restores a smooth idle, and our DPF cleaning restores a loaded filter from $550. Where a part does need replacing, we quote it before any work starts and photograph what we find.
Why Adelaide diesel owners choose us
For a high-intent local search this is the part that matters: the reputation that already leads the Adelaide diesel results on Maps, mirrored on-site so you can read it before you book. Read our 302 reviews and see why drivers rate us 4.8 stars.
RAA Approved Repairer and MTA member
Judged by RAA on knowledge, skills and equipment, audited regularly, with a fair-pricing promise: you pay only for work that is done and needed. We are also a member of MTA SA.
In-house chassis dyno
Tunes written and verified live under load, the equipment most general workshops don't have.
We photograph your service
And show you the photos when you come in, so you see exactly what was done and why.
All work guaranteed
A 100% Result Guarantee, with a 6-month or 10,000km warranty on tunes and a 12-month or 20,000km warranty on servicing.
Loan cars on request
While your vehicle is with us, so a day in the workshop is not a day off the road. Loan-form and licence terms apply.
4.8 stars across 302 Google reviews. The reputation Adelaide diesel owners built, and the proof behind every job we take on.
Loan cars on request run on a loan form and a current licence, and the full guarantee and loan-car detail sits on our guarantees and loan-car terms page. For a late-model diesel with a locked ECU that cannot be remapped, our ECU=Shop modules for locked-ECU vehicles still deliver a real, tested result.
Where to find us in southern Adelaide
You will find the workshop at 31 Aldenhoven Road, Lonsdale SA 5160, in the Lonsdale industrial area of southern Adelaide. It is an easy drive from the southern suburbs and the Fleurieu, with off-street parking and loan cars on request, so dropping the vehicle in does not cost you a day.
We are a short drive from Christies Beach, Hallett Cove, Sheidow Park, Reynella, Morphett Vale, Noarlunga and Happy Valley, and we look after Seaford, Aldinga and the wider southern Adelaide region.
Trusted Mechanical Services
31 Aldenhoven Road, Lonsdale SA 5160
08 8186 2005
Mon-Fri 8:30AM-5:00PM
enquiries@trustedmechanical.com.au
Diesel makes we service and tune
Every make, every model, from light 4WDs to heavier rigs. Our Ford mechanic Adelaide team handles the Ford Ranger ECU remap, our Toyota mechanic Adelaide team the Toyota Hilux ECU remap, and our Nissan mechanic Adelaide team Navara NP300 tuning. Our Isuzu D-Max ECU remap is dyno-proven, and we also service and tune the Mitsubishi Triton, Mazda BT-50 and LandCruiser (ask us about your model).
Diesel mechanic Adelaide FAQs
We're at 31 Aldenhoven Road, Lonsdale SA 5160, in southern Adelaide, open Mon-Fri 8:30AM-5:00PM. It's an easy drive from Christies Beach, Hallett Cove, Reynella and Noarlunga, with off-street parking and loan cars on request.
We run an in-house chassis dyno, DPF and injector cleaning equipment, and tune and diagnose modern common-rail diesels day in, day out. We're also an RAA Approved Repairer, audited on knowledge, skills and equipment.
Yes, every make, every model, from utes and wagons (Ranger, Hilux, D-Max, Triton, Navara, BT-50, LandCruiser) to light commercials. We service to the manufacturer's log book so your new-car warranty stays intact.
No. We carry out manufacturer log-book servicing using the correct parts and stamp your book, which keeps your new-car warranty valid while you use an independent workshop. That is your right under Australian Consumer Law.
Yes. Our DPF regeneration clean restores a blocked filter from $550, a fraction of replacement cost, and our injector and fuel-system cleaning sorts rough-running and diesel bug without an engine strip-down.
Yes. We scan the engine computer, read the live fuel and injector data, and check the DPF and EGR before recommending anything. Many faults come good with an injector or fuel-system clean, and anything that needs replacing is quoted before work starts.
Yes. We tune 4x4 diesels on our in-house dyno and fit Tough Dog and Dobinsons suspension, SJS canopies and KickAss dual battery systems, so the whole touring setup is built and matched in one Lonsdale workshop.
Servicing is quoted to your vehicle and what it needs, and you pay only for work that is needed. Custom ECU remapping starts from $1,495 and a DPF clean from $550. Call or book online for a quote.
Booking is the easiest way to lock in a spot. You can book online or call 08 8186 2005, and loan cars are available on request.
Still have a question? Call us on 08 8186 2005 or book your diesel in online.