What gives with Fuel MPG

[FamilyRide]

[ QUOTE ]
....Scientology-like cult that surrounds it frightens me.

[/ QUOTE ]

LOL WHAT!! [img]/ubbthreads/images/graemlins/eek.gif[/img] [img]/ubbthreads/images/graemlins/biggrin.gif[/img]

I use Amsoil in just about everything and in everything I use it in, I see a benefit that makes it more than worth the $$$.

However, I switched to Rotella in the Ex. because UOA's on Amsoil was coming back not much better than dino. You cannot extend the drain on the 6.0. Maybe change the filter and do partial drains, but it shears. Viscosity and flashpoint do matter regardless of what someone drinking Amsoil for breakfast thinks. I may switch back to try it again now that I have some miles on it but I may not. $30 vs $85????? At dealer cost too.

With Amsoil yes, easier starts, runs slightly smother (or didn, who knows with all the flashes since then) and absolutly no romping or other cold start issues. Yes, mine every now and then, will still romp a tiny bit with Rotella.

I wish people would stop giving Amsoil a bad name. It's good stuff in the applications/situations where it's right. I've had awesome results running 20w-50 Racing oil in my boat!!! However, it's over $6 a quart dealer cost. But for as much money as I have in the motor, it's well worth it and I still change it at about 20 hours.

My wifes '05 Pacifica gets Amsoil. It gets extended drains an it works great in that application. I don't like changing it so I change it and leave it alone. It's also the first time I "saw" a MPG increase using it in anything.

You guys stop talking Amsoil voodoo and giving it a bad name. USe, love it but don't come on here talking about it like it's what will save the world. [img]/ubbthreads/images/graemlins/rolleyes.gif[/img]

[fish4funjb]

Yea here we go again with yet another Amsoil discussion!! Anyway thanks for the replies about the fuel mileage. I hope it gets somewhat better. Although, I get better fuel mileage than my buddies Z71, might be he has a real heavy foot.

[lrantan]

It should go up with some miles on the engine.
I have noticed a mile per gallon more with 9000 miles on mine, 12 to 13 when brand new and 13 to 14 mpg now in mixed highway/city driving.

[short_stuff]

I agree with Irantan. Fish4fun, with my 2000 7.3 l didn't start seeing decent mileage until around 15k to 20k. It will get better. At around the 10k to 12k mark I saw about a 2 or 3 mpg increase. I wondered then if I was ever going to see decent mileage. Then around the 18k to 20k mark, I saw another increase. At that point, it tapered off and has remained pretty steady the past 4 or 5 years.
As others will state, speed will usually eat up your mpg after around 70 mph or 2000k on the tach. Wind resistance (a strong head wind) will also knock it down a little. Make sure your tires are inflated to where they should be. I've got Michelin LTX tires, and I run them with 70 to 80 pounds of pressure. I also drive with a tonneau cover over the bed. That is good for a good 1 mpg or more.
I use dino oil, either Mobil 1, Shell Rotella, or Chevron (depending on what's on sale), and I change my oil every 5k miles for piece of mind. Since I change my oil as often as I do, I don't think synthetic would give me much better performance, other than maybe stretching out my oil changes a little.
I change oil and oil filter at the same time. I change the fuel filter every 10k to 12k miles. I've never had the 'water in fuel' light come on, so I've felt pretty lucky.
Bottom line, your mileage should start improving as you get some miles on the truck. imho

[mobeydick]

[ 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 ]


I wish mine got that good!!

[mobeydick]

[ QUOTE ]
[ 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.

[/ QUOTE ]

I don't know on the 6.0 although I have 2 and I'm using Amsoil, with oil Drain cycle of 10,000 miles! I expect great results! I can tell something about the 7.3. On my 01 I started using Mobil 1 at 7,000 miles at 13,000 miles I changed the oil and filter, I didn't change the oil until it hit 100,000 miles. Now I change the oil every 10,000 miles! I did change the filter every 10,000 miles and topped it off at the full line on the oil dipstick. I never did a OA during that time. I did have one done a few months ago, 220,000-230,000 miles I think. Using a K&N air filter, Blackstone said everythng was below normal and my 7.3 was as good or better then most out on the road!!

I think Amsoil is just as good as Mobil 1 the only reason I didn't use it before was it cost more and was harder to get!

Syn. is the only way to go if you put 60,000 miles a year on your truck!! With Dino that is an oil change every 2.75 weeks!! I've got better thing to do!!

[IDIABUSE]

how true that is. most guys here that use dino oil can remember a few times they didn't have time to change out the oil and went a few k over, hey life happens and we dont always have time for our vehicles.
I did say some guys I know a few dont miss a oil change for anything.

Mobile One is one of the top oils and worth the coin but Amsoil is not as hard to get as some may make it out to be, a toll free call will get you what you need whenever you need it.
or ask any dealer you may happen to see, he will be more than happy to help you out.

hey mobey you said you had some blackstone UOA? do you remember the silicone content of the sample oil?
interrested in the silicone content using a K&N air filter
thanks

[IDIABUSE]

[ QUOTE ]
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.

[/ QUOTE ]

thanks for the heads up, manufactures are using synthetics why?
dosent matter they dont use Amsoil, fact is synthetics save time money
something the manufactures are tired of fooling with, with warranty claims and backlogged repair lines manufactures are turning to synthetics for better customer service and improved engine performance and extended drain intervals. GM is paid by Mobile1 to use their oil. [img]/ubbthreads/images/graemlins/biggrin.gif[/img] thats a clear winner for the synthetic oil
crowd [img]/ubbthreads/images/graemlins/smokin.gif[/img]
europe uses 20k drain intervals for 2 decades now maybe expensive gas has something to do with that?

[STG]

Stop making stuff up. Mobil doesn't pay GM to use Mobil1. Same for Porsche. What 20K oil drain interval in Europe?

The fact remains that NO manufacturer uses or recommends Amsoil.

You are so full of [censored], it's getting on your keyboard.

Post some facts. Better yet, shut up. You're killing Amsoil sales.

[LSC_Ya]

But amsoil is great! that's why ALL of the Us and domestic manufacturers SPECIFICALLY recommend using amsoil when it comes to oil changes [img]/ubbthreads/images/graemlins/rolleyes.gif[/img]


/sarcasm

If I hear this guy touting his snakeoil.. err amsoil one more time, I swear bad things will happen.

[4drdually]

Uh, I don't want to agree with IDIABUSE, but.... German cars do have 15-20k oil change intervals, but..... This is because they hold a heck of a lot more oil. Double your quanity of oil and it's bound to last longer. They do use synthetic, but no one driving BMWs do OA so no idea whether or not dino would do just as good, or how syn is doing. I was trying to stay out of this convo, but I'm going to chime in. I'm a fan of synthetic oil, has worked for me in the past. My 2 7.3s, no way, cost to much to change. With the Rottella, I've had no problems and my OAs are perfect. Currently I'm running a CAT oil filter. Much larger, still full flow. I'm up to oil changes every 7500 miles. I add 2-3 qts in between and I can go longer. OTR drivers don't use amsoil or mobil 1, they use rotella and similar dino oils with success. Good filtration and capacity is key. This garbage about micron levels and efficencies is stupid. They are called full flow filters for a reason. Why would you want to make smaller openings when the small stuff does not effect engin wear. Filtration capacity, the capacity to hold dirt, is more important. These are my thoughts, and I DO have OAs to prove my theories!

Dan

[mowhawky]

LET'S ALL STOP TALKING ABOUT THIS STUPID AMSOIL AND GET BACK TO ANSWERING THE GUYS QUESTION! WHY DON'T WE JUST START TALKING ABOUT AMWAY OR KIRBY VACUMS! GEEEEEEZZZZZ!

First of all I was having what seemed to be poor mileage too. I was getting about 13 come hell or high water (no towing during calc). After reading the many knowledgeable posts about mileage I came to the conclusion that the 6.0 is VERY sensitive with regards to fuel usage and RPM's. I saw a 2 MPG increase if I kept the RPM's below 2000 during take off. The people behind you get a little impatient but they are not footing the bill for the fuel are they? I will do an occasional romp at WOT from 10MPH up to 80MPH for fun. I am also running stanadyne but really haven't noticed any difference in mileage.

------------------------------------
2003 F-250 6.0L
FX4 Supercab Longbox
Build Date April 03
Torque Shift w/SOTF
Rancho Shocks.

Tires: BF Goodrich Rugged Trail T/A 265/75/16 (Pressures 55 fwd/65 Aft)
Oil: Rotella T Heavy Duty 15/40.

[hellokitty]

[ QUOTE ]
German cars do have 15-20k oil change intervals, but..... This is because they hold a heck of a lot more oil. Double your quanity of oil and it's bound to last longer. They do use synthetic, but no one driving BMWs do OA so no idea whether or not dino would do just as good, or how syn is doing. I was trying to stay out of this convo, but I'm going to chime in. I'm a fan of synthetic oil, has worked for me in

[/ QUOTE ]

Yup, the sump in those BMW's with I-6's approaches 9 quarts exactly for the reason you stated.

I also don't reccomend looking in the crankcase of a car that has run 20k drain intervals even with synthetic. [img]/ubbthreads/images/graemlins/phoney.gif[/img]




My 6.0 kicked out around 14 towing where as my new Dodge gets 13.

All around driving the 6.0 averaged 15, 2 MPG's better than my 7.3.

On the freeway I would get like 22 if it was dead flat. So does the Dodge.

The overhead was always dead-to-nuts +- a tenth or two. It's odd that all these owners have overhead displays that are inaccurate. Maybe they aren't educated in their proper use?

[mobeydick]

[ QUOTE ]

hey mobey you said you had some blackstone UOA? do you remember the silicone content of the sample oil?
interrested in the silicone content using a K&N air filter
thanks

[/ QUOTE ]

Universal Average is 9, 5,000 mile oil Change intervals. Mine was running 7 on 10,000 mile Intervals.

[pstrang]

With almost 19k on the truck, mileage for my daily 50 mile roundtrip commute is avg. 22 at 55-60 mph. But once I hit stop lights and run errands around town, my tank average is closer to 18 mpg. Overhead display is usually within 1/10th. Couldn't be happier.

I'm happy with Rotella-T Syn 5W/40. It's fairly cheap at Wally World ($15-16/gal.). And the truck starts very nice with it (even in the dead of winter); just plain awesome. I still follow recommended service intervals; even though I have an oil bypass filter too. But that's just me.

p.s. you can't compare mileage to any other truck though, the number of variables is endless and impossible to compare against. You're within the normal range though..don't worry.