I just figured out our fuel consumption for this week. Still using Shell 87 octane in both trucks, our RAM got 24.7 mpg an increase of 2.1 mpg above last week and the F-150 got a remarkable 27.1 mpg. I'm really impressed with this Shell fuel compared to Pioneer. When we got our RAM in September our first tank of fuel was from Esso because that's where Hanover Chrysler has their account. We got 24 mpg with that tank and the next fill-up was at Pioneer and we dropped to 21.6 and after that our fuel consumption got worse.
We filled up with 89 octane this week to see if the RAM will stop surging off idle. The F-150 is still on 87 octane.