Octane Poll

[ekalb]

I live at sea level and run 93 in everything I own (cars, small equipment, etc). Even worse, I'm still hanging onto an article I read about gas station "tiers" years ago and have only run Shell gasoline (unless I absolutely have no choice), since. I have always assumed there are better detergents in the Top Tier brands and that I am getting better MPG from 93, but have never tested the theory.

Just curious what the general consensus is around here and if it's time to rethink my approach.

 

[whatthetruck]

91 always as that’s the best I can get around me

 

[DaveInMn]

91 always as that’s the best I can get around me

Same here... The 91 I get is non-ethanol tho.. Seems to like it as I'm usually getting (fairly conservative right foot) almost 20 mpg (calculated... truck says ~21.5)
.

 

[RNA352]

93 always. I have to plan fillups strategically since there's no Top Tier within 30 minutes of my house.

 

[ltdan2025]

93 always as well.

 

[cdodgela]

Sam's 93 in my raptors since I got my first in 2017. Only time I've used 87 is when prices went over $4 for a few months. Currently 3.63/gallon, always the cheapest around me. Never had a problem with Sam's gas. There is a noticable power difference with premium/regular when getting on it.

 

[Hambone]

Costco 93 for me. Mostly Sport mode, 13.6mpg 8k miles.

 

[IamNomad]

I'm in the mountains in Colorado. Due to the high elevation octane is lower by 2 points. I use the highest that's available which is often only 89. Gas costs more up high too.
87 = 85 here
89 = 87 here
93 = 91 here

 

[Pismobound]

Here in Southern California, I’ve only been able to get 91.

 

[Raptured22]

93 and ethanol free 90% of the time. 93 with 10% ethanol only if ethanol free isn't available.