Diesel fuel is a type of fuel used to power vehicles and machines. It is made from crude oil and is different from gasoline because it requires higher pressure to ignite and is more efficient for larger engines. Full definition
The purpose of the unit is to cut down on the amount of diesel fuel used and to cut down on the amount of garbage that camps generate, which are both security risks. (cnet.com)
Initially it was a bit challenging to remember to put diesel fuel in the car. (autolist.com)
Some are made for passengers, others are made for diesel fuel but take passengers anyways. (theexpeditioner.com)