Never ever let your gas tank leave dirty because it will cause you a lot of money.. not only money but it will contribute a lot to cause massive global warming.. anyway the only key is to always maintain the neatness of your car.. also the car parts like rear view mirrror, condenser, auto lights. etc....

 

Thanks for all the posts for the type of gas I should use for my Cooper S! I normally use high octane and occasionally used mid grade and did notice a slight difference. My tank is running a little low so I wanted to top it off for the week. I live in Atlanta and even though hurricane Irma has hit Florida, we may get strong wind and rain. I was not as concerned about the gas shortage but discovered all stations in the area are out of gas! I will just not move my car the much next few days in hopes that a new supply will come in after the storm blows over.