About the workshop
Specialists, not generalists
Refined Diesel Mechanical is a Vasse workshop serving Busselton and the surrounding area, specialising in diesel and 4WD repairs and upgrades.
The owners
Locally owned, family operated
Meet Ben and Tammy, the team behind Refined Diesel Mechanical, bringing over 20 years of automotive and diesel industry experience, hands-on expertise and a commitment to customer care.
Having built, raced and driven our own 4WDs, we understand what drivers expect from their vehicles. This real-world experience shapes our approach, allowing us to provide practical, tailored recommendations for every customer.
Every tune is developed and tested on our in-house Mainline dyno, combining proven knowledge with precise diagnostics and a methodical approach to achieving reliable results.
Ben
Bringing over 20 years of industry experience across automotive, diesel tuning, dyno development, and 4WD racing. Ben leads every major diagnostic, custom tune, and performance setup that goes through the workshop.
Tammy
Keeping the workshop running smoothly day in and day out. From customer communications, bookings and parts logistics to making sure every vehicle owner gets clear, honest answers and updates throughout their job.
The Refined crew
Hands-on experience in every bay
From logbook maintenance and tricky diagnostic faults to custom suspension setups and dyno tuning — our team takes pride in every vehicle that rolls out of our Vasse workshop.
Every technician on our floor is trained to treat your 4WD like their own, backed by clean processes, proper tooling and honest communication.
Workshop capability
Qualified technicians, proper tooling
Diagnostic laptops, specialized tooling, and hands-on mechanical know-how in every corner of the workshop.
Electronics & Diagnostics
Dedicated diagnostic equipment to accurately trace electronic, sensor and ECU issues before any parts get replaced.
Mechanical & Engine Work
Deep hands-on experience under the bonnet of LandCruisers, Patrols, Hiluxes and diesels of every make and model.
How we work
Diagnose first, then fix
We don't throw parts at a problem. Our process starts with proper diagnostics so we understand the cause before we quote the fix.
- 1
Listen & inspect
Understand the symptom and inspect the vehicle before anything else.
- 2
Diagnose
Use proper diagnostic tools and process to find the real cause.
- 3
Quote clearly
Explain the work and the parts before you commit.
- 4
Do the work
Carry out the repair, service or tune to spec.
- 5
Verify
Confirm the fix — on the dyno where it matters.
All welcome
We work on all makes & models
Toyota LandCruisers are a familiar sight here, but we service and upgrade 4WDs and diesels of every brand. Bring yours in.
Ready to book your vehicle in?
Tell us about your 4WD or diesel vehicle and what you need. We'll confirm the work and get you on the road.