Your engine needs clean air to burn fuel properly. The air filter is the only thing standing between the outside air — full of dust, insects, and debris — and your intake, turbo, and engine internals.
In most parts of Australia, a 15,000km service interval for an air filter is reasonable. In Alice Springs, it's not.
The Alice Springs Problem
Central Australian red dust is extraordinarily fine — smaller particle size than most dust. It gets through filters that would stop coarser particles. It loads up filters faster. And because it's so fine, it can pass through a worn or incorrectly seated filter and make it to the turbo and engine.
After a significant dust storm or trip out bush, your air filter could be at end of life regardless of how many kilometres you've done since the last change.
What Happens With a Blocked Filter
A partially blocked air filter restricts airflow into the engine. The engine management system tries to compensate — but there's a limit to how much it can. The result: reduced power, increased fuel consumption, increased soot production (which then loads up the DPF faster), and additional stress on the turbo.
A completely blocked filter in emergency conditions is how engines ingest dirt.
How Often to Change It
Our recommendation for Alice Springs driving: check it every 10,000km, change it every 15,000km at maximum regardless of apparent condition. If you've done significant dirt road driving or been through a dust storm, check it immediately.
An air filter is $30–80. A turbo rebuild is $2,000–4,000. A new engine is much more.
We'll check it out for us,
book it in today.
