It might all be the same, or it might not.

Any of you who tune notice that not all 93 octane is created equally? Have you had better luck with any certain brand? Do you believe some brands return less knocksum than others?

Just thought it would be a fun conversation to see what everyone uses.

 

In MN, BP 92/93 is much better than most of the 92 from other stations. We have "MN pump gas" aka E85 here though, so thats usually the fuel of choice for Evo owners.

 

I would guess that it would be different. My uncle is a 'vette guy and was telling me last week that he only goes to Shell or 76 stations or whatever they are called nowadays. He said thats the only gas that doesn't "soot up" the back of his car.

I don't really notice a difference in the 93 octs that are around here. But i usually look for BP anyway.

 

As far as octane ratings all gas brands are the same. However, its the different types of additives that makes shell, 76, exxon/mobil, cheveron/texaco, arco, bp different.

 

I like BP

 

Shell for me in Nor Cal

 

76 in SOCAL!!!

76 for 4 years and months! [: WEEHE!

 

i just use safeway. 91oct out here in cali is crap period.

all my buds rant/rave of 76 being best tho.

 

Did you guys see the special they had on ABC about gas prices and such. Part of it the guy from ABC was at a CITGO I believe station where the gas trucks were getting gas. Turns out that the manager of that station said we get thousands of trucks daily that deliver gas to many stations. So that was kind of interesting how BP,Mobil,Shell,Chevron ect all gas up at the same station.

I gotta find the link maybe it's online also

here is the article and towards the bottom it states

(“Maybe everyone knows this but all gasoline is virtually identical and comes from the same refineries. The only slight differences are additives such as detergent. )

http://www.tulsaworld.com/Scene/arti...D2_ABCNew14221

 

I have had luck with Sunoco 93 oct.

 

Shell.

 

Shell - BP

 

I use Chevron or Shell.

 

i only use sunoco or mobil 93

ive had experiences with shell causing detonation.

although shell recently changed their gas a little, and i havent tried it in the last year or so

matty

 

I'm wondering about the gas that is 10% ethanol. Let's say you have 93 octane of straight gasoline and 93 octane of gasoline that's 10% ethanol. Does that mean the small ethanol mixture results in 93 octane, or did the gas start at 93 and then they mixed it with ethanol? I have actually noticed better gas mileage with straight gas over the 10% mix, which makes sense, but would the small amount of ethanol in the mixture actually help raise the octane level slightly? Would it even be a measureable difference at all?

I get gas at whatever station I'm close to at the time, so I haven't had the chance to run datalogs with only straight gasoline vs. the 90% gas/10% ethanol mix, but I wonder if there would be any differences...