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What kind of fuel mileage should I expect

im looking at a 2000 FLD 120. it has a 12.7L 430 1650 torq with a 10 speed and 3.73 rear ends and low pro 24.5 tires. what should i expect for fuel mileage? the tires are recap firestone tires (not liking that part of the recaps on the drives i think its stupid) the truck has 1.182 million on it the dealer is getting the history of the truck for me so i can find out what has and hasnt been done to it and he is going to run a ECM report and im going to do a rig dig report and oil sample the motor. he started it for me today and everything sounded good ran right around 750 rpm at a ideal. the computer doesnt work in the truck thats one this i first things i noticed but even if it work should i trust it or trust the ECM report? hes asking 16500 im thinking 15k or less depending on what hasnt been done to it. cause i can buy a 05 or a 06 with a 445 detroit 10 speed and 2.64 rear ends with 650k for 22k so is asking to much?

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My trucks name on fuel gauges is "chris350", look me up for a similar spec'ed truck. I run Portland,OR to the CA Bay Area, loaded close to gross with little deadhead. Pulling a flatbed.

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do you know if the 24.5 are going to make a big difference?

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Have the dealer outfit the truck with wide base single Michelin tires as part of the deal.

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truck needs rear end an a inframe so its not even worth it

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He is asking too much but that's because he's ready to drop probably about $3500 off for the right buyer. When i bought my truck i didn't haggle or do the fake walk-aways. Tell the guy what you're willing to spend and if he doesn't like it he can start looking for another buyer - he needs you more then you need him.

You can also check out valley freightliner in olympia, wa. They're trucks look like new and have low price stickers. Here's the link http://iphone.valleyfreightliner.com/ind...

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bad $#^ thanks!!!

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also do you know where a good place a oil sample to?

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I've heard speedco does a good job.

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again thank you!!!

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I've a 2001 FLD, like the truck and the fuel milage. My truck is "FRHT 02" on fuel gauges, running lower 48, mostly east coast pulling a dry box. Has the engine been inframed yet? The tires will definitely hurt your MPG's.

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im waiting on the dealer to tell me if it has had a inframe or any other work also how bad will it hurt it?

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My 2000 Classic, detroit 12.7, 390 rears, 13 speed, 24.5 virgin yokohamas, was averaging 5.3 mpg before I traded it. Highest was 6.9 on a good day, and down to 4.3 on the bad days. I also had a FASS on it which helped performance & Air tabs. I Pull a dry van

all over, mostly west and midwest, and different weights as well.

It was a good truck, drove it for 1.2 million miles but the fuel mileage was poor.

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As far as fuel mileage I think you can do pretty well with this truck, if driven correctly and the right modifications are made. An FLD is pretty aerodynamic. Its not quite as good as the century but still pretty decent. To start with get the charge air cooler tested and replaced if leaking, run an overhead on it, get low RR tires on it, fleet air filter, a high flow muffler. With the gear ratio and trans you should be able to run comfortably around 58mph. If you can start with making these improvements and run 58 mph I would say you could get 7mpg pretty easy and then start improving off of that. The price seems a little high. I just bought an 03 columbia with 780K same specs as yours for $13,500. I'm thinking 10,000 to 12,000 for this truck. If it never has had a rebuild your most likely approaching it. Check with Jackie Wormley, she is a member here and runs a 2001 FLD with almost the same specs. She would be able to tell you all about what you can expect and how you can improve his truck. Hope this helps.

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