What gives with Fuel MPG

[fish4funjb]

Hello all, My 06 PSD just doesn't seem like it gets that great of MPG AVG in the city not pulling anything. I think the last couple of tanks I have seen an average of 12 - 13 mpg. I went to GA not pulling anything as well 375 miles stayed at around 75mph cruise all the way and only got 17. Is this normal. Truck has just 2700 miles on it, Thanks in advance for the input!!

[FamilyRide]

You're right. Although it's a 7000+ truck, you should be seeing 25-27 MPG around town and 38-40 on the Hwy at 85 MPH. [img]/ubbthreads/images/graemlins/biggrin.gif[/img]

I'm kidding of course, but put it in perspective. What are gasser truck much lighter getting?

You can get a little better deending on your driving, but that's not bad. I get 11-12 true city. Short trips hoping hear and there. Commuter driving where I have some HWY, it'sll go to 14-16. HWY driving I've gottenas high as 20+ and as low as 17-18. Wind has a lot to do with it, speed etc. If you're getting 17 HWY at 75 MPG, if you slow to 65-70 MPH you'll likely see 18-19. 55-60 and you're over 20 or close to it.

If you're heavy footed around town, you'll kill MPG. It's still a big heavy truck and it's a diesel that can't be driven like a gasser, but will get much better MPG with a whole lot better power. [img]/ubbthreads/images/graemlins/laugh.gif[/img]

[hitecdan]

[ QUOTE ]
Hello all, My 06 PSD just doesn't seem like it gets that great of MPG AVG in the city not pulling anything. I think the last couple of tanks I have seen an average of 12 - 13 mpg. I went to GA not pulling anything as well 375 miles stayed at around 75mph cruise all the way and only got 17. Is this normal. Truck has just 2700 miles on it, Thanks in advance for the input!!

[/ QUOTE ]

Is this hand calculated mileage, or from the overhead?

12-13 mpg city driving is about right. 17 mpg driving 70 mph sound about right too. If you slow down to 60 to 65 mph your mileage will go up to 18 to 19 mpg on the freeway. Also, your engine is still in it's break in phase. So you should be a little better mileage as you get closer to 10,000 miles. Maybe a 0.5 increase.

The best way to get better mileage is to slow down while driving your 7,000 lbs +, about as aerodynamic as a brick 4x4 monster truck.

Or trade it in for a 2 wheel drive model. [img]/ubbthreads/images/graemlins/ooo.gif[/img]

[IDIABUSE]

try running your engine cleaner with synthetic oil like amsoil, and amsoil special design oil filters for the 6.0 engine, less contaminates to cause egr failure and poor fuel milage, since you have low milage it is better to start with synthetics, less overall wear in the long run, a engine with 50k will have dino oil buildup and show wear if disassebled.
using amsoil will keep the engine from any wear less metal to metal contact at higher operating temps than all competitors, proven, documented,less problems top mpg and long drain intervals, for diesel service you can safely use 20k intervals using amsoil diesel oil and amsoil oil filter along with clean oem air filters.
if a k&n air filter is what you use then I wouldn't go over 10k with amsoil.
I have 4 buddies with 6.0 that use amsoil they all report increase mpg easier quieter cold starts. I know that skeptics will yap and babble but in the end amsoil is the best lubricant money can buy, prove it by using it yourself, the rear differential can get a early oil drain and use amsoil 500k severe gear oil for less breakin wear and help your mpg.
even after all that amsoil has tons of products for anything that burns fuel/natrual gas
one stop store of anti wear lubricants

[hitecdan]

[ QUOTE ]
for diesel service you can safely use 20k intervals using amsoil diesel oil and amsoil oil filter along with clean oem air filters.
if a k&n air filter is what you use then I wouldn't go over 10k with amsoil.


[/ QUOTE ]

How to void your engine warranty, let me count the ways............

You know, I would really like to see a OA on a sample of Amsoil after it been ran in a 6.0L diesel engine for 20,000 miles. Given the 6.0L reputation for shearing oil, dino and synthetic, I would suspect the oil would have a viscosity rating similar to water.

[IDIABUSE]

water viscosityof clean oil that is able to still lubricate better than week old rotella full of soot/that just gets so dirty until it's time to change,with the same ol weak, expensive oil.

[STG]

Is there just one damn post from IDIABUSE that doesn't mention Amsoil or aftermarket filter kits? SHEEEESH!

[IDIABUSE]

you people don't get it, "yet" you will when the big 3 use extended drain intervals within next 5 years, they all ready started with GM 8k oil drain intervals more than 2X the old 3k intervals with warranty secure for consumers.
how many rear diff tags u see from oem that say use synthetic oil only?
as far as ten years ago they stated that. time to dump big oil cost too much to consume

[STG]

What I "get" is that you have a disease probably related to Tourette's Syndrome wherein you cannot type a sentence on your computer's keyboard without mentioning Amsoil.

Like a previous poster said - Comeback and post after you use it in a 6.0 and when you have independent verifiable data from a certified lab to back up your claims.

You certainly never took a logic class in a Jesuit university. Your paragraph on extended oil intervals is painful to read.

Manufacturer's extended oil change intervals have come about with regular motor oil. How can that be? Manufacturers specify synthetic oil for differentials, but NOT Amsoil. NO manufacturer uses Amsoil as a factory fill or factory recommendation. Longer oil change intervals without Amsoil??? Could it be differences in new engine design? How about cleaner burning fuels - both for gasoline and diesel engines?

Wow! The world continues to spin without Amsoil. Wanna bet? I don't use it and I say the sun rises tomorrow.

[barrelhorses]

Our Manuals now indicate a 5000 or 7500 drain oil change interval, depending on driving conditions, so that is better than the old 3K requirements.

My last two GM cars have not had a recommended oil change interval. They have an oil life system that I guess is computer monitored. When the computer deems that it is time for an oil change, the light will come on. I have pretty much stuck with a 5K oil change intervals even on the cars. I did let it go once just to see how long it take for the oil life system to tell me to change it. It was 8800+ miles when the light came on.

IDIABUSE, for goodness sake, just post some good hard numbers (OA results, MPG spreadsheets, etc.) for the members to see. Your claims are just so unbelievable, no one is just going to take your word for it. In the last two weeks, I've seen at least a half dozen people ask you for proof to support your claims. You have failed to provide that proof, instead just making more unbelievable statements. Provide us with some links to the information that will support your claims.

[Lineman]

I'll probably never use Amsoil simply because I am sick of seeing Amsoil posts. Besides that, if I am taking a sample, I might as well drain the oil, grease the front end, and add wiper fluid. The price of an OA is half an oil change anyway, and you have to use the pricey Amsoil when you do change, plus buy and install the bypass. Nah, I'll continue to do my 5k maintainance even when I get my 6.0...and the next truck, and the next.

[chrisnjj]

I also tried amsoil oil with the amsoil filter. I did as recommended from the company, 15k oil change with filter change at 7.5k miles. Well I ended up going to 13,700 and took a sample and sent it to Blackstone Labs. They specifically stated I went too far on the change and couldn't run it that many miles between changes. I had to see for myself if i could do the extended drains and the 6.0 can't take it. I am back to the same old Rotella T every 5k. My 7.3 van has 266k hard towing miles and is stronger than ever. I even have to put in that I tried using Amsoil on my Harley and ever since I switched it smokes on start up. In never did before.

[brnscofrnld]

Why did this get turned into an Amsoil thread again?

O, someone just wanted to make sure his MPG were what he expected.

Anyway, My 06 has a little over 10k on it and my commute takes me 11 miles on a 4 lane park way and 13 and change is what I see hand calculated. On a HWY trip with no trailer I see 18-19 depending on the winds and traffic conditions, but these things are heavy trucks, that all you have to remember.

[Black05]

We'd rather hear from them as they are the ones providing warranty coverage. If you and Amsoil will unqualifiedly agree to warrant all oil related engine failures, then perhaps someone will listen. Give it a rest. You have worn out your welcome. No one is listening anymore. Your wasting bandwidth. Here's a quarter, call someone who cares.

Got the message?

[jeffwoehrle]

I'll be the first to admit that I know nothing about Amsoil. However, the Scientology-like cult that surrounds it frightens me. For that reason alone I will never even try it.