Unless you have a particular reason including price, I would suggest you consider propane as a fuel source. We have a 500 gal tank dedicated to our Generac and a gas stove, and we usually have it topped off for a couple of hundred dollars once a year. And we are up in the Smokey Mountains with frequent outages that can last up to a week at times. Just sayin, it works for us.
Propane refills after a hurricane can takes weeks. Also, propane has far less energy and costs more than diesel. We also have a diesel truck and Jeep, and can acquire and fill diesel with no problems because we live in a marine area where diesel is plentiful.
Also, diesels can run at 1800 rpm and not 3600 rpm like a propane generator. That means it is quieter and the engine lasts much longer.
I can get a diesel generator with a double-wall 100 gallon tank built in and hand fill it if necessary. Propane means I am dependent on a supply company like Ferrell which sucks as a company. I had to use them for the stove propane 110-gallon tank and that was damned expensive and took months to get.