those hash marks are maximum speeds for the gears. they are there so you wont go over them inadvertantly while going downhill. i normally only use them as shift points if maximum urge is needed such as a passing situation. climbing hills, keep the motor sounding happy. dont lug it down and dont rev it to the max. it will tell you if it is happy by its sound. this keeps oil circulating and fan pushing air. you can keep the pedal to the floor climbing and when it sounds like it is beginning to strain shift to a lower gear. in a 240 pedal down all the way is pretty much standard operating proceedure until a desired speed is reached. for the trip just change all filters if you havent already and the oil make sure your tires are good, and if possible take an extra spare tire. the roads up there are pretty rough... also if a big truck is coming from the other way, just pull over as far as you can and let it pass. also take extra headlights or install a rock screen. the rocks like to fly and break stuff... good traveiling. i wish i could come too.

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.