Premium gas vs. Regular Whats really better for your car?

A Master mechanic's take on Premium Gas Vs. Regular whats really better for your car. Should you put premium gas? Or should you put regular gas? What about E85? We talk about why your car might need premium and if it's better to use premium in a regular gas car. Also we talk about E10-E15 gas. Also touch on E-85 gas. I will explain why top tier gas is better for your car than premium gas in some cases. If you have any questions you can contact me at #thecarcarenut