Which gas to you prefer? Chevron Supreme or Shell V-Power Nitro+

[Banana Hammock]

My preferred gas station is the one I can pull in and out of without scraping.

[sibhusz06]

Ive been using Costco 93 in my 911, M3 and X3 and although it works fine and is much cheaper, i always feel subtle sluggishness and a slight loss of power/throttle response. Seems like Shell is the only gas that gives me the best power and mpg. Chevron is no longer available in the DC area. I do make it a habit to use Chevron Techron before oil changes.

[duk]

Costco or shell here and seems fine for last few years

[Seattle M3]

Chevron for last 20 years.

[GotV8?]

I try to always put shell v gas, but once in awhile will use marathon gas.

[Bemo]

Shell and Mobil

[Apexeon]

Originally Posted by duk

Costco or shell here and seems fine for last few years

Waiting in Costco lines is not good for the M3

[elim11]

Originally Posted by Apexeon

Waiting in Costco lines is not good for the M3

That's why you go early in the AM or right before the close at night

[Lt1camaro]

I use exclusively shell with 0 ethanol. Any other gas I've gotten, car is rough on cold start and idling.