DRW mpg vs SRW?
Post Fiend
Joined: Oct 2005
Posts: 10,626
Likes: 7
From: Plano TX and Brentwood TN
Originally Posted by duallydan
And with any thread about mileage, you have to add the bs factor to anyones numbers. Not many people are man enough to admit they only get 12 or 13 miles per gallon. I am..
Last edited by tex25025; Aug 25, 2007 at 06:48 PM.
Post Fiend
Joined: Oct 2005
Posts: 10,626
Likes: 7
From: Plano TX and Brentwood TN
Originally Posted by duallydan
And with any thread about mileage, you have to add the bs factor to anyones numbers. Not many people are man enough to admit they only get 12 or 13 miles per gallon. I am..
Posting Guru
Joined: Dec 2006
Posts: 2,498
Likes: 3
From: Windsor, Colorado
My 99 dually had 3.73s in it and it pulled great, I would stay away from the 4.10s if your concerned about mileage. My current 02 srw also has 3.73s sometimes I wish I had the old 3.55s in my 95, but 3.73 seems to be a good setup for pulling and cruising.
Post Fiend
Joined: Oct 2005
Posts: 10,626
Likes: 7
From: Plano TX and Brentwood TN
A higher number gear will sometimes help you out with town mileage, but it's when you go to highway miles is when you start seeing the dive in mileage. If you can avoid excessive quick bursts of speed from a stop and try to gradually slow down when you need to stop, you'll eliminate most of the pitfalls with with those gears. I can see a gradual increas in mileage even going 70 at interstate speeds if I have a good distance to go, but that increase comes slowly compared to what I would get if I was going slower.
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decadent and depraved
Joined: Jan 2005
Posts: 6,703
Likes: 6
From: Right Behind You
Originally Posted by duallydan
As I have said before
If you are buying a Superduty and are concerned with mileage, you don't need a truck. Mileage was the last thing on my mind. How many can it seat, how comfortable is it, what can it tow.....
If you are buying a Superduty and are concerned with mileage, you don't need a truck. Mileage was the last thing on my mind. How many can it seat, how comfortable is it, what can it tow.....
Tim
Mountain Pass
Joined: Oct 2005
Posts: 191
Likes: 0
From: NH
I try to squeeze as many miles out of a tank.
early-99 F350 CC SB 4x4 7.3L SRW auto 3.73 with cab-high cap and 285/65-16 BFGs, 6637 and a cheap tuner.....12mpg around town, +15mpg at 70mph (2000rpm). Wish it was more, but not bad for 7500lbs.
early-99 F350 CC SB 4x4 7.3L SRW auto 3.73 with cab-high cap and 285/65-16 BFGs, 6637 and a cheap tuner.....12mpg around town, +15mpg at 70mph (2000rpm). Wish it was more, but not bad for 7500lbs.
Laughing Gas
Joined: Feb 2003
Posts: 998
Likes: 23
From: Tennessee
I want the best mpg possible out of mine. It is not a question of being able to afford it, but how much you have left over to save.My 6.0, 4:10 rear end dually gets about 12.5 unloaded around town. My 01, 7.3, 3:73 rear end, SRW got about 17.5 around town unloaded. A huge difference in my opinion.
Post Fiend
Joined: Oct 2005
Posts: 10,626
Likes: 7
From: Plano TX and Brentwood TN
Your town driving with that 4.10 should be getting better then your 3.73. I get 14.4(hand calculations, computer says 14.5) when driving around town and I have 4.30 gears on mine and I don't drive it like I'm ma or pa kettle.
Posting Guru
Joined: Mar 2005
Posts: 2,060
Likes: 7
From: Burnsville, MN
Not sure I buy into not being concerned about mileage in a big truck. If you get 10 mpg but could be getting 11, that's a 10 percent improvement. Works out to a thousand bucks savings over 30,000 miles. Now at 50 bucks an hour, thats 20 hours of rehabilitation training for your gas foot......!
Senior User
Joined: May 2007
Posts: 128
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My '05 F350 CC, DRW 4WD with 6.0 and 4.10 rear end averages 13.5 combined city and highway. Best I've gotten on the highway is 16.5 at 55mph.
My '03 F350 (same config as my '05) delivered similar results.
My '03 Excursion 6.0 4WD with 3.73's gets 18.5 on the highway at 55, about 15 around town and combined driving.
My '08 F450 CC DRW LB 4WD with 4.88's gets about 11.5 at 55.
Seems that every bump in rear end ratio is good for about 1 - 2 mpg.
Scott
My '03 F350 (same config as my '05) delivered similar results.
My '03 Excursion 6.0 4WD with 3.73's gets 18.5 on the highway at 55, about 15 around town and combined driving.
My '08 F450 CC DRW LB 4WD with 4.88's gets about 11.5 at 55.
Seems that every bump in rear end ratio is good for about 1 - 2 mpg.
Scott
Last edited by scsmith42; Aug 27, 2007 at 11:35 AM. Reason: Added info.