Hello. I own a Lexus RX350, and I've been fueling at Shell with premium gas only, because someone informed me they have the most clean gas (?) around the market. Whatever he meant, I happened to fill up at a local Speedway, and ironically, I got 40 more miles in MPG until the fuel gauge lighted up. ( I only drive locally, same patterns of roads, and consumes until the fuel gauge lights up, and reset my odometer to check MPG just for the curiosity.) Does this mean Speedway carries a better gas than shell? I haven't tried other gases like BP or Marathon, but someone please resolve my curiosity. Thank you.
2007-02-27 21:30:00 · 2 answers · asked by 350 1 in Cars & Transportation ➔ Maintenance & Repairs
Speedway sells whatever gas they happened to buy that week. If you want to be sure you're getting the best cleaners and consistant quality stick with Shell or Exxon or Chevron, which all have great cleaning additives. I like Chevron's Techron myself, but as long as you stay away from crap like Lukoil or Sunoco, you're getting good stuff.
2007-02-27 23:21:49 · answer #1 · answered by Nomadd 7 · 0⤊ 0⤋
well, fuel gets graded with its percentage of Octane it contain....not how clean it is!!!
Anyway the Octane controls how fast the fuel burns, so if the fuel has low Octane it will burn so fast and thus lower mpg, if it has high Octane it will burn slower your car's computer will read higher mpg.
2007-02-28 06:09:35 · answer #2 · answered by Anonymous · 0⤊ 0⤋