I have a 2004 classic xl 525 cat twin turbo
Looking for information on how to get better fuel mileage.
Thank you in advance
FUEL HELP better fuel mileage
Discussion in 'Freightliner Forum' started by GHOST1911, Jul 28, 2026.
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You could
: Drive faster
: Drive slower
:Fix boost leaks
:Turn off the fan
:Turn off the A/C
:Remove the trailer
:Regear it
:Better tires
:New Injectors
:Overhaul it
:Stop Driving
: Don't use the high side of trans
Yeah, Vague questions deserve vague answers -
Buy a Volvo.
86scotty, mtoo, Diesel Dave and 2 others Thank this. -
Just put less fuel in it.
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What are you getting for fuel mileage now? The easiest way that doesn't cost money is to try progressive shifting (if you are not already). Use the terrain to your advantage, check tire pressures often and slow down.Concorde Thanks this.
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Is your engine an MBN motor?
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Charge more and don’t worry about mpg

North Pole Nightmare, mtoo, drh72 and 1 other person Thank this. -
That's what I do, but that ain't enough.
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Lol, it’s never enough!
Leaving El Paso today heading to Florida..thinking to take I-20 then drop back down to 10 via I-49. Found cheaper fuel on that route and I don’t have to deal with all the construction, San Antonio and Houston.
Done this load many times and looking for a change of scenery…still debating.North Pole Nightmare and Big Road Skateboard Thank this. -
Go no faster than 65. Make sure you have even weight distribution on your trailer. Keep your truck and motor as clean as possible. Use your cruise control as often as possible. Stay on top of your maintenance.
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