Just like the title says,what octane are you running in your s/e?
That may be Ill but here in S.Florida Shell is veeery expensive over anything including BP.As much as 30 to 35 cents more.I am using just regular old 87 now. I started with Shell 89 exclusively however...
I have run numerous mpg checks comparing Shell 89 and Caseys General Store 87 and see no appreciable difference in MPG or performance. In IL it'a all 10% blend as well. Plus it's a 20 cent hike per gallon from Caseys 87 to Shell 89.
You'll save a ton of money using 87 with a once a quarter fuel system cleaner.
Someone has too much money in the budget to be using an SRT8 for a sheriff's car.So far, I've put almost 9k on my '10 SE since 1/7/2011--using primarily QuickTrip 87--never used premium--and getting good mpg (probably 22-24--never really checked) even as fast as I drive--Two motors and I were running up to 90mph on the interstate the other day escorting a 2 star general and color guard from Church to Canton National Cemetary--and she runs out GOOD!!!!! BTW-see attached photo of a Henry County Sheriffs car
Don't forget in California all of the gas is pretty crap compared to some of the the lowest grade in other states.Ive been running 89 for a few weeks now since I read in another thread that it is recommended. I was running 87 for months but I didnt notice or feel anything strange. I also noticed I never recieved the manual for the car since i tried looking into this gas issue. But I figure the couple extra bucks at the pump isnt a big deal. Right now with gas prices, you get raped no matter what you use.