A diesel specialist workshop in southern Adelaide
If you want a diesel mechanic in Adelaide who actually specialises in diesel, not a general shop that also does diesel on the side, 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) need diesel-specific knowledge and equipment a general workshop often does not have: 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, free loan cars, 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 free loan cars.
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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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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
Judged by RAA on knowledge, skills and equipment, audited regularly, with a fair-pricing promise: we won't charge for work not done or not needed.
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.
Free loan cars
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.
Free loan cars 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 free loan cars, so dropping the vehicle in does not cost you a day.
We are a short drive from Christies Beach, Hallett Cove, Sheidow Park and Reynella, and we look after Noarlunga, Morphett Vale, 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. We also service and tune the Isuzu D-Max, 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 free 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.
Servicing is quoted to your vehicle and what it needs, and we won't charge for work that isn't needed. Custom ECU remapping starts from $1,395 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 free loan cars are available on request.
Still have a question? Call us on 08 8186 2005 or book your diesel in online.