I will be the manager but the manager could punish the attendant or if she or he is nice, will forgive the employer.
There isn't a 5.7L Hemi diesel.
YES
In a gasoline engine, definitely not. There are times when it is not inappropriate to add small amounts of gasoline to diesel for a diesel engine.
Gasoline engines cannot run on diesel. Only a diesel engine can run diesel. And a diesel engine cannot run on gasoline.
no
Empty your tank out, drain the fuel lines, as the gasoline will damage your diesel engine.
87 octane regular if it is a gasoline engine. Diesel fuel if it has a diesel engine.
No, you cannot put regular fuel into a diesel engine, because the two fuels burn at different temperatures. You can try cleaning your engine, they make products to remove buildup, and this will help your mileage.
A 'spark ignition ' engine is your regular gasoline engine as opposed to a diesel, which is a 'compression ignition' engine
Drain the tank, change the fuel filter, refill with diesel.
No, Diesel oil is needed. Regular oil will not provide the necessary lubrication and it will cause a lot of blow-by smoke as it leaks past the rings since it is too thin.
One of the main advantage of using a Diesel engine as opposed to a regular is that a Diesel engine tends to burn less fuel. They also have very high thermal efficiency.