13/03/2026
We’ve been getting quite a few questions lately about the news reports of “dirtier fuel” coming into Australia due to the current fuel supply situation.
So here’s a simple explanation of what’s actually going on.
Normally, fuel sold in Australia has a sulphur limit of 10 ppm (parts per million).
Because of global supply issues, the government may temporarily allow fuel imports with up to 50 ppm sulphur to help prevent shortages.
That sounds like a big jump… but in reality 50 ppm is still considered low sulphur fuel internationally, and most modern engines will run perfectly fine on it.
From a mechanic’s perspective, the difference between 10 ppm and 50 ppm is very unlikely to cause issues if it’s only used for a short period.
Over very long periods, higher sulphur fuel can contribute to things like:
• Potentially more frequent DPF regenerations in some diesel vehicles
• Slightly increased deposits in emissions components over long periods
• Catalyst components wearing a little faster over many years
But as a temporary supply measure, it’s generally not something motorists need to panic about.
For comparison, many parts of the world have historically run fuel with much higher sulphur levels than this without widespread engine problems.
If you want to be extra cautious, a few simple habits always help keep your vehicle healthy:
• Use reputable fuel brands
• Avoid running your tank extremely low
• Give diesel vehicles occasional longer drives so the DPF can regenerate properly
• Stick to regular servicing with quality oil and filters
The biggest factor in engine reliability isn’t small changes in fuel sulphur levels.
It’s consistent maintenance and proper servicing.
So if you’ve seen the headlines and were worried about filling up your car, there’s no need to stress.
If you ever have questions about your vehicle, the team at Elden’s Autobahn is always happy to help.
Feel free to share this with anyone who’s been worried about the “dirty fuel” headlines.
