branded (chevron) or generic (costco) gas??

[Jokill]

This site identifies and explains what the top tier gasoline producers are.
http://www.toptiergas.com/

Just some food for thought.

[static808]

Originally Posted by Jokill

This site identifies and explains what the top tier gasoline producers are.
http://www.toptiergas.com/

Just some food for thought.

thanks, i've seen that website before. im just a little skeptcial since it all seems like a marketing ploy to me. they throw a bunch of numbers and tests in your face, but i still dont really know who "top tier gas" really is. for all we know, its all those companies banding together and forming group to attempt and outsell every other gas company. the information on that site is limited to the tests they use (very technical and unintelligible to the common person) and the gas companies that "pass" their standards. i thought most branded gas was good, but i didnt see exxon/mobil on that list, and that's supposed to be a pretty damn big oil company who makes pretty good engine oil. sorry if im showing too much concern about the brand of gas i use, i was just curious if anyone else out there had some hard facts regarding the cleanliness/quality of brand name gas versus generic/wholesale gas. one tip given by a few mehcanics is to simply use the wholesale gas, and then twice a year throw some chevron techron concentrate in your tank. the bottle of concentrate is equivalent to 10 fill-ups at chevron (kinda weird fact!), and the techs claim that techron does indeed clean out your tank, injectors, etc... i think i'll go this route, since doing costco gas with techron concentrate twice a year will save me about $160/year total on both our vehicles. over the life of our cars, that's well over $1K...

--B

[hans_fh]

I go to 7-eleven for the regular gas for city road, which is the cheapest among the stations in my area. When I have a long trip on highway, I usually use Chevron because I got 46 MPG on the way to Las Vegas the Spring Break.

[jlift]

Originally Posted by Jokill

This site identifies and explains what the top tier gasoline producers are.
http://www.toptiergas.com/

Just some food for thought.

A direct cut and paste from your website above...apparently it's ok to use up to 10% ethanol.....even on "top tier" gasolines..

1.3.1.2 Base Fuel. The base fuel shall conform to ASTM D 4814 and shall contain commercial fuel grade ethanol conforming to ASTM D 4806. All gasoline blend stocks used to formulate the base fuel shall be representative of normal U.S. refinery operations and shall be derived from conversion units downstream of distillation. Butanes and pentanes are allowed for vapor pressure adjustment. The use of chemical streams is prohibited. The base fuel shall have the following specific properties after the addition of ethanol:

1. Contain enough denatured ethanol such that the actual ethanol content is no less than 8.0 and no more than 10.0 volume percent.