I use Top-Tier Detergent gas whenever I can. Most name brand gasoline is top-tier. I wasn't sure if my local Kroger or Speedway gas was top-tier so I called their distributor. Yep, both top-tier. My car's manual says to use top-tier, if not, use their fuel cleaner every 7,500 miles or 12 months. The cleaner I use and that makes it for my car manufacturer is Chevron Techron Complete Fuel System Cleaner. As for the bike, the only time I use the cleaner is when I've done a trip and ran a lot of unknown stuff.