They preheat the air in the cylinder to make starting easier. they actually heat the diesel fuel to make starting easier
Yes, the little bit of diesel won't harm the gas but make sure it's cleaned out before putting diesel back in as gas will harm a diesel. For more information please see the answer to the Related Question shown below.
Are diesel engines better than gas engines is sort of a yes and no question. Diesel engines generally get better fuel mileage and last longer overall. But, gas engines are easier to maintain on your own and gasoline is much more readily available than diesel fuel is on the whole.
Some benefits of diesel trucks are: better gas mileage, less pollution, they are easier to maintain, the retain their value more, and they have a larger towing capacity.
defnetly diesel
diesel.
Diesel is a gas and gas makes you fart big time.
if you mistakenly put gas in tank instead of diesel, just drain or syphon gas out of tank refill with diesel and go on the gas will actually clean injectors but wont do any damage to the engine gasoline used to be added to diesel by truckers, in the winter to stop diesel from gelling. you make get some black smoke from exhaust till gasoline is gone ,but a little gas wont hurt the engine
diesel is a liquid fuel at the gas pumps.
Diesel
save on gas
diesel is a fuel that has oil in it