Why’s one better than the other? Also, my car 2016 328i x drive was given to me at 61,000 miles. Is there anything I can buy to put in my gas tank with the gas once in a while just to clean out the gas lines? I know they sell stuff like that why or why should I use it? If I should which brand is best? Thanks in advance everyone!
Look up TopTier Gasoline vendors and only use those. They include detergents to clean the insides and it works. You don’t need anything else. Over the course of 5k miles your internals will be a lot cleaner and the engine will be running better.