Here are some of the reasons why you shouldn't use regular gasoline in an E-85 car:
* Reduced fuel efficiency. E-85 has a lower energy content than regular gasoline, so you will get fewer miles per gallon when using E-85.
* Engine damage. Using regular gasoline in an E-85 car can cause engine damage, including damage to the fuel injectors, fuel lines, and fuel pump.
* Voiding of warranty. Using regular gasoline in an E-85 car may void the vehicle's warranty.
If you are considering using regular gasoline in your E-85 car, it is important to weigh the risks and benefits before making a decision.