Was that the E-ZPass or cash toll charge?
On the turnpike I can pull most grades in 6th when the speed limit's 65, but on I-68, I go all the way down to 3rd to pull of the some of the hills. The increased fuel consumption negates some of the savings from the tolls eliminated by not using the turnpike, but how much, I don't know.
Besides being scenic, I-68 generally has very little traffic, except near Cumberland at times, and no tunnels to pass through.
2009 GMC Sierra 2500HD | Crew Cab | Standard Box | 4WD | Duramax/Allison
2000 Jayco Eagle 266 | FBS | TT
1986 Coleman Laramie pop-up -- Still in the family!!!