Quote:
Originally Posted by FRSBRZGT86FAN
You won't really run into a station without 91 in texas.
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Texas is too big a state to be able to say that. If you go up into the High Plains, you can find yourself out of gas in shitty little towns with nothing but an Alon station with 89 as the highest grade. The 89 will behave slightly better up there at that altitude, but they're really not high up enough to justify running the lower octane. If you come down from there with that stuff in your tank your performance will really turn to crap.
Also, not all 91 is created equal. Sunoco has apparently bought out all the Chevron stations between Odessa/Midland and the Rio Grande Valley, pulled the 93 and replaced it with Sunoco 91, which is mostly pig urine. Based on how it performs, I refuse to believe their 91 is any better than 89 at a good station. I have run 91 before with little effect, but that Sunoco crap made the car sluggish as hell.