LanceRKeys wrote:
When you say you average 62, does that include stops, or do you actually drive 62 on the interstate? I don’t think I could bring myself to slow down to 62 on the interstate.
When I was pulling with a 1/2 ton pickup, the best mpg was around 58-62 - more than that and the RPMs just weren't in the 'sweet spot'.
This 6.2L seems to also 'prefer' running around 60 mph +/-, but the hit on fuel economy isn't as severe until closer to 70 - again, depending on terrain.
A lot of western states have a separate speed limit posted for trucks - 65, maybe 70 mph vs 70-75 for passenger vehicles. I just park the cruise control @ 65 and tuck in with the semis and cruise along. I end up passing them on the big hills - I ain't gonna dog it at 35-40 mph just to stay with them - but the rest of the time it makes for a pretty decent cruising speed.