Only Chevron...Ever and for the last 25 years. I hear quality issues with Shell. Apparently not so with the above comments.
I'm originally from So. California and thought Arco went out of business. I remember using their gas in my very first car and it ran like crap. I started using Chevron at that time and it ran like a whole new car.
My parents were right that time after all!
'13 X3 28i M Sport Carbon Black Metallic w/Oyster Nevada