Hi guys,
Just got a 2006 2500 SB, Cummins of course!! I just went over a thousand miles and am getting no more than 11 miles per gallon. My 03 did much better than this. Do I need that TSB I read about about for 04-05. Thanks. I love this site!! My wife thinks I'm sick spending hours on here. Later.

 

My mileage started around 12 and has crept to around 14...1400 miles...Power service helped a tad...Other mods may have helped...Hard to tell in cold weather

 

I tried to tell my wife this is a site to help me be a better husband!

Needless to say she didn't buy it......

Then I told her I was shopping on line for her!

Good thing I got wireless. I have my laptop in the dog house!

 

Thanks for the reply. I hope mine goes up to at least 15 or so.

 

Go for the Gold...I want 20!!!!

 

Another question.... My 03 was a 6-spd and when the clutch engaged the engine was louder. My 06' auto in park or neutral is quiet, but when in gear at a drive thru or whatever it is really loud! Have you noticed this at all?

 

Different tone due to load on engine....I can throttle up in P or N and never hear the turbo...Throttle up in gear and she'll

I gotta go to N to order

 

So it should be that loud in gear? I guess I'm paranoid for trading in my 03, bad karma or something that truck was perfect for 45k I just wanted an auto and leather and such. Thanks again for the reply. I've been reading on here forever. Just now posting. This site rocks!

 

At 1000 miles about 15 mpg. 2 mpg (10%) worse than the 04'

 

I added an AFE drop in. That should only help correct? I had one in my 03 for 45k. Thanks.

 

MAKE SURE YOU RUN ADEQUATE TIRE PRESSURE. I put that in bold because it's that important, especially on the front tires. When I had my '04.5 dually, raising the pressure from 55 to 80 psi (the max recommended) improved my mileage by 2.5 mpg. No kidding-just that change did it, confirmed through several tanks at both pressures. Since your 2500 is a srw, I'd recommend putting about 70 psi or so in the rears, since they don't carry as much weight empty as the fronts. I do not recommend putting less than the max in the front tires on these trucks-they just carry too much weight.

 

Read the door jam on front psi.I don't think 80 is it for safety reasons.Its 65.Up to 80 on the REARS if FULLY loaded.If not it will ride like a buckboard.

 

Read the tires. It's been 80 on both of the duallies I've had. To me, they really don't ride that rough at the max, at least not with the front tires at the max.

 

Thats for MAX load in the REAR! Not a truck made(2500 or 3500) or tires 16 or 17s even HINTS to 80 psi in the FRONTS.Never have! Read the warnings.Unloaded 80psi makes EVERY jolt in the road transmit through to my teeth.I don't run 80 with a 10k gooseneck trailer hooked up.Its for MAX weight in the bed.I did run 80 (REARS ONLY)in my 2500 SRW pulling 10k in high heat conditions.

 

It will take 6-8k miles to get best milage.