what gas

[mpunklil]

wait you put cupcakes in your gas?

LOL!

[AndrewBird]

I had heard somewhere that Chevron, Shell and Texaco all are owned by the same company so they all get the same gas. Hell, even Texaco now has "Techron" additive, which used to be a Chevron only thing.

[Kruzen]

87 until i'm chipped. Who the fuck wants to pay 4 dollars a gallon?

My bike runs 87-89 its pretty happy with both.

[Jscotty]

wait you put cupcakes in your gas?

No.. I put cupcakes somewhere else that rhymes with gas.

[Vlad_318iS]

What does BMW say?

My 318iS fuel door(?) has a sticker saying "premium unleaded only"....so I always go with 91 @ Chevron.

[Jscotty]

When they say "premium" they are speaking of gasoline that has all of the necessary additives regardless of octane level. But one thing I learned yesterday is that there is very cheap gas that is bad for our cars. If you see an off-brand station that sells gas for 18 to 23 cents cheaper per gallon than most other stations, that is indeed the BAD gas.

[MikeE30325i]

i run 91 octane (commonly highest around here) in my chipped 85 325is.

[nando]

I run 92 (I have to), preferrably shell but I'll also use chevron. at nearly $4 a gallon it kinda hurts when I'm getting sub-20mpg though.. that's why I'm looking for a 318is to get to school and work. :p

FWIW, I have a lot of friends in the refinery industry - and the guys who work for Arco/AM-PM won't even put it in their cars.

[mpunklil]

nobody here NEEDS 91+ unless your cars are modified, or your timing is off...which would be a really bad thing since its not manually adjustable. any major brand, including arco, will be fine for your car. some are better than others simply due to additives. if you run "cheap" gas, just throw some Seafoam in your tank once every two months and you are golden. If you dont know what Seafoam is, then Google it :) end of story

[DaveSmed]

Chevron is the best, as far as ive heard its like this....
Chev... 0% ethinal
Shell... 3% ethinal
76... 5% ethinal
Arco?ect... 8% ethinal


ethinal is bad. to say it simply its "watered down" with chemicals or somthing.
there is some way to test it using a vial and watching the seperation after 5 minutes... ill try and find it.

Its not really "bad", its a cheap way to boost octane. Burns clean, vaporizes quick, all kinds of good stuff. Problem is, messes with the A/F ratio.... Your MPG ends up dropping as the 02 sensor corrects it. Thats why E85 cars are prime picking for fuel injectors, (those old flex fuel dodge spirits that litter the junkyard for example) about 14 pounds of air to one pound of fuel gives the optimum burn for pure gasoline. I forget the ratio, but you end up needing more ethanol to achieve the optimum ratio.

The test your referring to is to use a graduated cylinder (easiest to use, but a few diferent things will work) and fill it half full of water, half of the fuel you want to test. Cork it and shake the hell out of it. Let it settle, and see if the water half "grew". The ethanol will be drawn to the water seperating from the gas. If you do some calculations by the volume of gas you started with, and the volume of gas you end up with, you can figure out the percentage. (thats why the graduated cylinder makes life easier)

[mpunklil]

thats it, im breaking out my 5th grade chemestry set...and im gonna settle this once and for all!