Looking for a jerrycan, the question of whether this should be made of plastic or metal made. It took me a canister to store fuel for the lawnmower. After the ADAC had advised in an article for the optimal storage of fuel into a container made of metal, since plastic would not conclude absolutely airtight, I came across the Mannesmann M 047 T-20 gasoline cans.
The canister holds 20l and is designed to be robust. The paint is also good. For the canister, there is an accessory to Mannesmann M 049 T-pourer. Together this is a good package, if you want to store gasoline and certainly long.