Why does this happen on hills ? Btw this is I 84 going to Connecticut

771835

{"replyTo":"

848274 发表于 2019-12-20 14:30:29 Tool? 🤷‍♂️🤦‍♂️

","text":"Did it again. Word of the day I guess. Lol. ","replyToPid":287635}

623679

{"replyTo":"

162871 发表于 2019-12-20 15:01:40 I've heard that if you paint the engine yellow you can be the one passing, I'm not sure though it's just what I've been told.

","text":"😂","replyToPid":287653}

665812

{"replyTo":"","text":"First thing I noticed.... high beams n high rpms🤦🏻‍♂️🤦🏻‍♂️","replyToPid":0}

576904

{"replyTo":"","text":"ok.... serious reply...just incase you don't know.... what's your gear ratio?\nhow heavy? what's the grade? if you have a \"highway\" gear ratio.... when climbing drop your speed, lower your RPM's....try climbing at about 20 mph (30kph)...keep your RPM's around 1400 ish... you'll be down in 5 low if you're running a standard tranny..... it's not a race! \npushing that hard is hard on the truck....you'll wear our your rearends faster, your tires faster, you'll burn less fuel.... etc etc.... be nice to your truck and she'll be nice to you... and yes, turn off your high beams......just sit back, enjoy the ride up those hills. Patience, Driver, patience. oh yes, and when climbing in warmer weather, turn off your AC or you'll cook the motor, literally. climbing slow will keep the heat down...... that truck will climb all day long if ya take it easy. \n\ncheers!","replyToPid":0}

724453

{"replyTo":"","text":"wow either shift up or back off the accelerator those rpms are making me cringe over here","replyToPid":0}

417751

{"replyTo":"

576904 发表于 2019-12-21 08:24:19 ok.... serious reply...just incase you don't know.... what's your gear ratio?\nhow heavy? what's the grade? if you have a \"highway\" gear ratio.... when climbing drop your speed, lower your RPM's....try climbing at about 20 mph (30kph)...keep your RPM's around 1400 ish... you'll be down in 5 low if you're running a standard tranny..... it's not a race! \npushing that hard is hard on the truck....you'll wear our your rearends faster, your tires faster, you'll burn less fuel.... etc etc.... be nice to your truck and she'll be nice to you... and yes, turn off your high beams......just sit back, enjoy the ride up those hills. Patience, Driver, patience. oh yes, and when climbing in warmer weather, turn off your AC or you'll cook the motor, literally. climbing slow will keep the heat down...... that truck will climb all day long if ya take it easy. \n\ncheers!

","text":"🙏 agree on every point.","replyToPid":288321}

688068

{"replyTo":"

576904 发表于 2019-12-21 08:24:19 ok.... serious reply...just incase you don't know.... what's your gear ratio?\nhow heavy? what's the grade? if you have a \"highway\" gear ratio.... when climbing drop your speed, lower your RPM's....try climbing at about 20 mph (30kph)...keep your RPM's around 1400 ish... you'll be down in 5 low if you're running a standard tranny..... it's not a race! \npushing that hard is hard on the truck....you'll wear our your rearends faster, your tires faster, you'll burn less fuel.... etc etc.... be nice to your truck and she'll be nice to you... and yes, turn off your high beams......just sit back, enjoy the ride up those hills. Patience, Driver, patience. oh yes, and when climbing in warmer weather, turn off your AC or you'll cook the motor, literally. climbing slow will keep the heat down...... that truck will climb all day long if ya take it easy. \n\ncheers!

","text":"1400 rpm?? assuming it a standard otr truck, it's most likely higher geared,  343....273...with that low of rpm pulling a grade, you'll cook your pistons! the exhaust temps will be much higher.  Keep it around 1800-2000 r's when climbing a grade.","replyToPid":288321}

688068

{"replyTo":"

688068 发表于 2019-12-31 02:30:15 1400 rpm?? assuming it a standard otr truck, it's most likely higher geared,  343....273...with that low of rpm pulling a grade, you'll cook your pistons! the exhaust temps will be much higher.  Keep it around 1800-2000 r's when climbing a grade.

","text":"oh...and you burn more fuel climbing a grade with low rpm! you're dumping in more fuel than what the horses are using, run higher rpm, the engine is using the fuel you're giving it.","replyToPid":293893}

576904

{"replyTo":"","text":"I'm going to agree to disagree with you on this subject.  I don't know the gears for the gentleman's truck which started this thread, however, I'm running 3:42, with a manual transmission.  I have found my truck runs cooler and uses less fuel when climbing in 5th gear at approximately 30 ish km/h (approx 20 m/h) at approximately 1350 to 1400 rpm's. she's not working hard and she'll pull like that all day long.  my truck is well tuned and looked after. Oil viscosity tests are all good, plus it's easier on tires, the rear ends, drive line etc etc.... \n\nas an experiment, I've powered up hills, which the DD15 at 505hp has lots of power, and I've found pulling hills as I've described has been better in performance for my truck. running up a hill with higher rpm's has showed higher oil temp, higher axle temps and an increase in fuel consumption. \n\nthanks for the alternate opinion! \n\ncheers!","replyToPid":0}

567218

{"replyTo":"","text":"my thoughts exactly","replyToPid":0}