branmin

Have only ever used Chevron Premium or Shell V1 Premium...was wondering what you guys are using..if you ever switch and if so was there a noticeable difference. Today I was told to try Sunoco and would see a difference...now my friend has a Viper, so one can hardly compare this to my CLS500..but I thought this thread could lead to some interesting answers?
Getting about 21mpg on average(has got progressively better month after month over a period of one year). Do very little highway driving.....mostly stop and go stuff and 15 minute runs at no more than 65mph.

rrpnow

i use shell v1 premium, only because thats what we've always used... occasionally ill get something else, but like 95% its shell...

clsamg

Diesel