On another note. At what RPM should you up shift? I'm sure I shouldn't be going up to 1900 and 2000 if I want better fuel economy.

[RostyC]

Congrats on your new venture Tracer, good luck to ya!

[GMAN]

Originally Posted by SteveBooth

On another note. At what RPM should you up shift? I'm sure I shouldn't be going up to 1900 and 2000 if I want better fuel economy.

Everything I read about maximizing fuel economy states that you should be in the highest gear possible. I have gotten so accustomed to shifting by sound and feel of my truck that I don't remember the best rpm to shift, but I believe up shifting should be done around 1,400-1500 rpm. At this point, that is a guess. I need to check that next time I jump in the truck.

[solo379]

Originally Posted by GMAN

but I believe up shifting should be done around 1,400-1500 rpm.

I believe you are correct! In any case, if you push it over 1600, you are wasting fuel! :wink:

[heavyhaulerss]

i dont let the rpms to go lower than 1200 when cruising. as far as up shifting it depends... sometimes if i shift below 1700 by the time i grab the next gear the rpms drop so low that i have to drop another & then if i do it again, i'll soon be at a crawl or stopped. now that may be with my 11.1 detroit. it's all ive ever owned & drove. the rpms seem to take longer to drop, so i have to rev to 17000 min & up to 1900 when loaded. shifting at a higher rpm & getting into the next gear at around 12-1400 is better than shifting at 14-1500 & then lugging the motor at 10 g's because the rpms were not high enough at 1st downshift. of course with my 1.1 mil mil motor being so weak & wore out i have to rev higher to be in the right rpm range on next gear. feeling & listening is better to me than looking at rpm gauge. ive been told that lugging at too low rpms are worse on motor than reving higher, that will only cost a lil more fuel. i get 7.8 m.p.g. carrying 48,000 at 57-60 m.p.h. & 5.5-6.2 m.p.h. at 72 m.p.h.

[tracer]

Thanks to everyone for the kind words. I'll keep you posted as to my progress.

Originally Posted by GMAN

You should be able to down shift between 1,100-1,300 rpm. I read an article once that recommended down shifting at 1,100 for maximum fuel economy.

The instructor at my driving school used to say, "In order to determine the best RPM for downshifting, turn on the jake brake, take your foot off the accelerator, and notice at which RPMs the jake brake cuts off. That's your RPM for downshifiting." I tried this technique on my old Volvo and it worked (cut off was at 1,100 rpm), but with these CAT engines ... I don't know. On my truck the jake brake cuts off at ... 900 rpm. It's not an engine, it's a miracle

Originally Posted by Red Clay Rambler

You might want to reconsider the aero mirrors

Thanks for the tip. I didn't know aerodynamic mirrors had this fault.

Originally Posted by solo379

Try to keep it between 12 to 1400rpm, and don't be afraid, to drop it to 1100, for a short time(cresting the top of the hill).

Yeah, that's what I have been trying to do. I noticed the RPMs were at 1,400 when I did 65 mph and 1,250 rpm around 56-57 mph. At 1,250 rpm the truck was still going uphill with a 10,000 lb load without any problems.

Originally Posted by GTR SILVER

how about some pictures>>>>>>>>>>

Could somebody please tell me how to upload pictures from my laptop onto the message board? I know how to upload pictures from the Internet, but what about from my own laptop? Thx!

Originally Posted by heavyhaulerss

i dont let the rpms to go lower than 1200 when cruising. ... i get 7.8 m.p.g. carrying 48,000 at 57-60 m.p.h. & 5.5-6.2 m.p.h. at 72 m.p.h.

That's what I'd like to get in my truck, heavyhaulerss: 7.8 mpg in a cabover is amazing! No wonder you own so much real estate I read your previous posts where you gave this tip about decreasing your income taxes by investing into rental real estate; and I'd like to do the same thing. Just talked to a Re/Max real estate agent here in Guelph, ON and she said she'd been in the business for 10 years and the real estate prices were going up on average by 6% every year for the past 10 years!

[mapleleaf_1]

Hey Tracer Glad to hear it's going well for you. If you do any more trips to Montreal you take extra care on the #401, as you know it can be bad between Montreal and Toronto. I wish you all the best and be safe. Drive safe everyone.

[serbie]

Originally Posted by tracer

Could somebody please tell me how to upload pictures from my laptop onto the message board? I know how to upload pictures from the Internet, but what about from my own laptop? Thx!

photobucket is the most commonly used photo hosting. I believe it's still free as well. Create your account, should only take a few minutes. They'll show you how to upload your pics.

When your done uploading, you'll see different ways of sharing your photos underneath each picture.

Should be able to copy and paste the link into the reply text field of CAD.

Wa-La... pic's in your posts.

[pepe4158]

G.L> may all your runs be safe and profitable

[tracer]

Originally Posted by serbie

photobucket is the most commonly used photo hosting. I believe it's still free as well. Create your account, should only take a few minutes. They'll show you how to upload your pics.

serbie, thanks for the tip. here's some pictures.

2004 International 9400, Cat C15 435 hp 1,650 lb/ft torque 3.73 rears, 13 speed tranny, 160 000 mi:



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