Originally Posted by QSHIP
Premium may cost a little more but I noticed you get a better gas mileages in it.
This is true.
Premium allows the engine to make the power and fuel efficiency it was designed to make.
Interestingly, they actually recommend an even higher octane in Europe.
Go with the 91, if I could get 93, I'd even use that.
2008 C300 Sport Palladium Silver, P2 Package, Auto
<BR>2009 SLK 350 P1 & Heating - Sport Motor