Western Australia just bought its own diesel reserve.

Not from the federal government but a separate state owned stockpile, stored in Wyndham in the Kimberley, controlled entirely by WA. Not to be shared with any other state.
The reason is that some of the fuel counted in Australia’s national reserve isn’t physically located in WA. It can’t reach remote communities, mining operations or farms when the distribution chain breaks down, which it did in March, when some WA miners were running on 5 days of supply.
WA uses a quarter of Australia’s total diesel. The deal they just signed is 4 million litres, potentially expanding to 12 million.
The agricultural sector alone is already 10 million litres short. At best, this buys less than 4 days.
The national stockpile is now down to 31 days of diesel. The IEA minimum is 90.
Australia hasn’t met it since 2012.
A whole state government had to buy its own fuel reserve because it can’t rely on the national one.