i recommend using the same gas over and over.. to keep getting the same gas mileage.. reason i say this is . when u switch say from chevron to shell. the car/ecu has to get use to the new gas therefore it would get worst gas mileage till its learned the new fuel... after that it should be fine..

one thing i always wonder is.. if it burns slow and gives u better gas mileage .. how would that make your car faster if it got u more mileage??

 

Shell V power is rated to be the best gas. Top gear did a test, and an STI picked up 15hp from just using Shell gas. Draw your own conclusions.

 

Hmm, any hope of a link to Youtube?

 

Ill dig around and find it.

 

I'll admit I'm a sucker for Shell's V Power marketing. When I get an S it will get V Power

 

Ususually Chevron because there is one next to my grilfriend's house with premium 10 cents cheaper than the 76 down the street. Shell and 76 ocasionally, never Arco, Valero, Cosco, etc.

 

I have always used Shell gasoline in my cars. I got this habit because my parents have used Shell for many years. I just picked up on it and havent looked back. I also have a Shell Mastercard and get 5% back on Shell gasoline purchases. Plus Shell is supposedly one of the best gasolines out there and it is close to my house.

 

Chevrons "techron" marketing sucked me in

 

shell/chevron.... to me there the same i fill up to either one of those who ever i see first.

 

i use shell and exxon mobile