I use 91 Octane always. I don't notice any differences in performance in what gas station I get it at but. The reason they want you to put higher octane in these cars is because of the carbon buildup that the regular octane leaves behind. The higher the octane the hotter it burns. These are higher compression motors then mosts cars so put the good stuff in always. I could of put 100octane fuel at the Rebel by Vegas but that might be too hot for the motor and cause problems so I put the 91 in.

Where do you get this 93octane at. I am wanna put that in and see how she runs. I live in Scottsdale and have never seen a Sunco.

 

Some areas/gas stations don't have anything higher than 91. Back home the highest octane you can get besides race gas is 91. Every gas station I've seen in this area carries 93, probably because of all the expensive *** cars around here

 

i havent seen higher than 91 in bay area, ca :P

 

Sorry, incorrect.

The octane rating is the fuel's resistance to detonation. Detonation is the ignition of the fuel mixture before the piston has completed its compression stroke.

The ideal octane rating for your engine is the octane that produces a stoichiometric reaction, where the fuel and air are completely combusted. Ideally, you should use the lowest octane possible that doesn't cause detonation.

Using too high of an octane fuel will cause a decrease in power, due to the fact that it takes more energy to ignite the mixture. On the other hand, using too low of an octane rating increases your risk of detonation (causing eventual damage to the motor.)

if your car is stock, 91 will do fine. If your tuned for 93, use 93.

 

Neither have I, doesn't exist in these here parts.

 

im in ohio akron canton area and 93 is everywhere! you can even get 100+ in 55 gallon drums if you want. thanks for letting me know

 

highest around here or that ive seen is 91 which is what i fill up with

 

I am trying 89 tonight, I usually use 93, but only have 87, 89, and 93. I put a different fuel system cleaner in tonight too. I usually only drive city and get maybe 250 out of a tank. Ill let you know how it reacts after I run it empty.

Also read the packaging! After I dumped the whole bottle in I read it treats 18-35 gallons. Im retarted.

 

There is almost no difference at all in 87 and 89. I've got a buddy who works for a fuel company and they, at the company, will not use 89 and just use 87 cause its basically the same thing...something to do with the holding tanks or some nonsense like that. I'd take it his word though, considering he works for "the man". Also, the higher octance fuels have detergents in them that the 87,89 do not have. Fuel is dirty...if you use 93, I would think that you really shouldn't have to use a fuel cleaner every four fill-ups just because of all the additive in the higher octane fuel. Then again, it can't hurt....just my $.02...

 

You may be right, but my guess is theres something else in the cleaner, because im getting FINALLY over 200 miles a tank with using that stuff