I usually fill up at costco 91 octane. I just wonder you have any opinions?
Also, where can I fill up even higher octane fuel around Southern California (the valley perhaps)?

 

There are two Alliance stations in the SFV that sell Trick 101 (Van Owen/De Soto and Woodley/Sherman Way). There is also a top secret location in the SFV pumping Sunoco 104.

Craig

 

These are two articles regarding this, which my brother forwarded to me. I haven't read them yet, but it explains the tiers/standards of gas that Honda, Toyota, BMW, and GM have set.:

http://autorepair.about.com/od/generalinfo/a/110305.htm

http://www.caranddriver.com/article....&page_number=1

 

Craig how much is the 104 at the "secret" location?

 

For you, a very special price.

Craig

 

girth by federal standards I dont think so, just my 2 cents! BTW its 93 octane here in florida!!!

 

Not all gasoline is the same. The main difference in gasolines are the additives, which keeps your engine and its parts clean. If you are going to only keep your car for a short period of time, it doesn't matter much. If you plan on keeping your car a while, you want to get good gasoline. The best stations are mobile, chevron, shell, and texaco.
jb

2003 996tt
2004 bmw x5

 

The additive packages, as stated earlier, are different, check out www.toptiergas.com for more info. Some of the car manufactuers on that site recommend Chevron, Shell, Conoco, 76, Phillips 66 and others.