Here in the UK petrol storage is limited by law to 30 litres.
I keep that much.
In two military spec steel jerry cans each of which has a capacity of 20 litres but is only filled to 15 litres.

I use red colored cans for petrol.

I store about 100 litres of paraffin, kerosene in the USA
This is stored in similar but blue cans.

I do not use petrol regularly.
I use a little paraffin normally mainly for a portable heater.

I store several 19 kilo propane cylinders.