There aren't that many gas companies out there who actually manufacture it. A lot of the time they're smaller outfits that buy it from a big supplier. There are differences between different suppliers though. If you see gas for really cheap all the time, then it's probably cheap. Occasionally someone will do tests of gases but I don't remember the last time I saw one. Chevron is actually one of the big companies so you are in fact getting Chevron gasoline. There are places around here such as 7-Eleven and Candian Tire whom I've been told to avoid, since their quality is really cheap.

 

Yeah, here in my town we have some big places - Chevron, Exxon, Amoco, Shell, soon to be a Mobil "Performance Station" with brake dynos and rice mods and whatever.... and one "down home" gas station called Tucker's Gas-N-Go. It has a BAD rep. It's $.05-.10 cheaper than anywhere else, but I've heard of cars sputtering after filling up there, and other watered-down stories. I also know they sell "Racing gas" out of 50-gallon barrels on weekends... supposedly like 110+ octane... and, of course, the kids with the DX and LX Civics buy it and then roar all over town....

 

I just use 87 but I don't have a GSR either. My sister's boyfriend has a Corrado VR6 with some engine work and he used to only use 94 octane. After a while he realized the insignifigance of it and now usually just uses 87 or 91. I think some people just like to fill up with Premium or Super to pump up their egos..no pun intended ahha...

 

You're kidding right? Some engines require high octane fuel in order to prevent premature detonation of the fuel/air mixture in the cylinder before spark ignition - this is usually the case in high compression or multi-valve (3 or more valves/cylinder) engines. Regarding your boyfriend's VR6, he should be running premium (his engine has a 10.1:1 compression ratio, pretty high for a V6) so he's probably running with a slight power loss and retarded timing and/or pinging/knocking occuring.

 

i only use amoco premium. never used anything else since i bought 'er. but now....they are gonna have race gas. :thumbup:

 

It's not significant to lose power when he's just using it as a daily driver. I was wrong though about him using 87, he uses atleast 91 but not 94+ as much anymore. Plus he lowered the compression in turbo-readying his engine. But he doesn't go to Sunoco just to fill up on 94 as much anymore (and I believe a place has 95 around here). Instead he just gets 91, unless of course he's racing. And as far as I know, he hasn't experienced any engine knocking on 91.

 

Race gas has less energy than regular gas, but it's more detonation resistant.



If he's running a turbo, shouldn't he still be using high octane?

 

I said he was turbo-readying his car. He hasn't turboed yet.

 

I only see a difference of about 6 cents from the no name gas stations to the big guys in San Jose. 6 cents at an average of about 11.0 gal, thats only 66 cents. I find that on the streets! Big guys are cleaner, have free air/water, new squeegees in clean water, pay at pumps, convienence store, clean bathrooms. You dont always find that at the mom and pops gas stations.

 

I only use Chevron or Mobil