[EricK]

Lately I've been too lazy to fill my car with the same brand of gas. So I just fill my tank with Premium of whatever brand is around... Sunoco, Texaco, Exxon, Amoco, Shell... Is that bad for my cars?
Eric....

 

[EricK]

Originally posted by geoff:
no...how would that be bad for your car?

???

I don't know Geoff... That's why I asked. I heard that it's better to stick to one brand of gas, just like sticking to one brand of oil. Castrol Syntec (which I use) is actually quite different from Mobil 1 (which has problems with bubble formation).
Eric....

 

[EricK]

Yeah I heard the same as well, so maybe I should stick with one brand. It's interesting that my car actually felt slower with 94 octane Sunoco than it did with Exxon's 93 octane fuel. I heard that it's because Sunoco adds too many unnecessary additives....
Eric....

 

[EricK]

Are their some states that require that ethanol based fuel, and aren't there some engines that have had problems with that type of fuel like BMW's 4.0 liter V8 (until they made changes in their 4.4 liter V8). I think Audi's V8 has had similar problems as well...
Eric...

 

[EricK]

You're right Brad and Geoff... different brand premiums probably don't make a difference...
Eric...