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post #1 of 7 Old 01-26-2011, 07:08 AM Thread Starter
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couple questions

Hi Everyone,

This is my first post on here! I just want to start by saying I have always owned fords, but this is my first diesel. I just sold my 94 gasser for a 95 w a 7.3. on my drive home yesterday, I filled up before leaving (fuel up to the top of the neck), and filled up when I got home. I had driven 72 miles home averaging 65 mph, and I only had to put approx. 3 gallons in when I got home. Thats 24.33 mpg! driving around town I did the same from yest to today, and I averaged 21 mpg city. Is this common for the 7.3? I was expecting more like 17 & 20, but was truly amazed to see these numbers! This is a 95 crew cab, dual wheel, long bed with a 5 speed manual transmission. There are roughly 200,000 miles, and she sounds strong. My first question is, is this common for this body/engine config?

Also, when I was having some new tires put on her, the tire guy mentioned that the 5 speed in this truck takes auto trans fluid? Ive never heard of that, but figured I'd ask.

Last but not least, I'm in Central FL. it doesnt usually get too cold here (maybe 30-40 at night), should I plug it in at night? or should I just let it go & let the truck warm in the morning?

Thanks alot guys, I appreciate any answers you have
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post #2 of 7 Old 01-26-2011, 08:47 AM
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First of all is the truck totally stock? if you drive like a granny you can get some impressive mpg. but that sounds amazing..

second yes the zf5 and zf6 both use ATF.. ha.
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post #3 of 7 Old 01-26-2011, 08:56 AM
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i would plug your truck in at night too. its easier on the glow plugs in the long run, even if it'll start without bein plugged in.

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post #4 of 7 Old 01-26-2011, 09:38 AM Thread Starter
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As far as I know the truck is completely stock. It has a replacement 7.3 from a 98 though, so I cant say whether it does or doesnt have anything internal done. The only thing done to it, is the guy had put a K&N filter in it, nothing more. I am planning on doing a 4" straight exhaust, & an intake sooner or later though.

I actually took it out one more time after I posted this, just to make sure. same as before, but I did ALOT of doggin on it. spent a bunch of time in the turbo. the damage was 17.9 mpg. went 51 miles, truck took 2.8 gallons afterwards.

Maybe I'm just lucky???? I know I'm not going to complain!
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post #5 of 7 Old 01-26-2011, 09:45 AM
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trying to calculate fuel mileage on such a short trip isn't very accurate IMHO. Run a whole tank and see what you come up with. By the way welcome to the org and congrats on the new truck


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post #6 of 7 Old 01-26-2011, 09:13 PM
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Quote:
Originally Posted by jay diesel View Post
trying to calculate fuel mileage on such a short trip isn't very accurate IMHO. Run a whole tank and see what you come up with. By the way welcome to the org and congrats on the new truck
yeah my personal best mpg was 21 or so.
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post #7 of 7 Old 01-30-2011, 02:17 PM Thread Starter
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OK, so heres the results after the weekend. Two Tanks were put through the truck. One on highway, one in city the couple days prior. The highway mpg averaged 23.6 mpg over 249 miles, I ran between 68-70 mph the whole time. The other tank averaged 19.9 over 268 miles, and that was a mixture of city & some highways where I live. So I'm guessing from comments here & what I've read, I'm doing pretty good.

Another question I have is, if I switch from the 5 speed to the 6 speed tranny, will I have lower rpms on highway speeds & will I be able to go faster? Right now, at 70 I'm rocking 2100 rpms. I'd love to be able to do 75-80 mph on the freeway.
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