If the car is specified to be able to use regular there will be no effect on the car, if it requires a different fuel serious damage could be done.
A regular car is a car than rans on gasoline. But a hybrid car is a car that rans on gasoline and battery.
the car with the normal gasoline
For a 1991 Lincoln Town Car : " regular " unleaded gasoline , 87 octane
no
They both use gasoline as fuel.
According to the 2004 Lincoln Town Car Owner Guide : ( " regular " unleaded gasoline , 87 octane )
The control group is the car filled with normal petrol (gasoline in USA).
The difference is that a hybrid car has an engine that can run on gasoline OR the battery. The regular car only runs on gas.
All major brands of gasoline are pretty much the same.
Yes. An E85 car is called a Flex Fuel car meaning it can burn regular gasoline or E85.
it depends on your car
It is always okay to switch between regular and premium gasoline. With that said, it depends highly on the make of your engine whether or not your car will actually benefit at all from the use of premium gasoline. Make sure to look in your car's manual before you switch to see if your car can benefit for from the switch.