Dr. is right! Let's keep on task here and just omit the name calling and such.

Zmax seemed to work on one of my vehicles. This post contains everything I know about Zmax

Here is the only side by side comparison of additives for fuel that I know of: Dieselplace Spicer Additive Test
Because of this test I quit using P.S. since it actually lowered lubricity of the fuel. I tend to believe that major companies will just do the minimum when it comes to adding things to their products. There are examples of this everywhere. Chevrolet ships every new car to the dealer 1 qt low on oil. The dealer is the one who gets to pay for that additional quart of oil. Not a big deal you say: well just think of it this way. If a qt of oil costs $2 and you shipped 1 million cars last year - you just added $2 million dollars to your bottom line. Many years ago, car makers were leaving off the grease zerks on new cars. Same principle. If they were saving $1 per new car then they were actually adding millions to their bottom line by not supplying the grease zerk.
I can promise you that if we were to get fuel from various stations and test it, then it would be very near the minimum requirements for lubricity.
It's just like when I worked in the electrical industry. The wire manufactures state that a roll of wire will be + / - 10% of it's stated length. I didn't measure every roll of wire but every one I did measure was always - 10 or -12%. I never got one that was over length or even what it was supposed to be. I think there is a reason for that. It is always because of the bottom line. There is usually some 'wise' explanation but they usually don't hold up. Chevy states it is because the robots that fill the crankcases just cut off the fill too early. I for one know that if a machine can be consistent then it can also be consistently right. It doesn't take a rocket scientist to know that if you program in 5 qts and the machine always gives you 4 then you just program it to dispense 6!!
Here in America we are stuck on the idea that everything has to have a warranty. Have you noticed how the Chinese are dealing with this? Ever wonder why most things they produce completely change very often. If they make it different every few months, then you can't go back to the store expecting to get the same thing. If it isn't made anymore then you can't get another under warranty. Kind of a sneaky way to do away with the warranty isn't it . . . .

(On a side note: we used the same text book in our college class. Excellent book I might add. I didn't notice the section on fuel or at least I don't remember it. I just might have to pull it out again and see what it says. I have a scanner . . . . )

You guys keep any and all info you have or can find on fuel additives coming. I think there is a lot we all need to learn. I am also sure that fuel changes quit often. Because of that we all need to stay on top of those changes and try to do what is best for our rigs!

Or like Ronald Reagan said: "Trust, but verify." I can't verify what's in the fuel I buy, so I'll just take care of it myself, thank you very much.

As fas as machinery lubrication is concerned, generally speaking, I'm not sure there even is such a thing as too much lubrication within the range of proper fill levels and so forth. But a whole helluva lot of them damn sure were destroyed by too little lubrication.
Here's the story, if you really want to know... :w2:
http://www.bobistheoilguy.com/forums...39#Post1790639

Stand up company that has been making fine oils for several years.

I run Mileage Max in my Chipped Power stroke. It is a great product and i swear by it!
It especially important now with the Now sulfur Diesel fuel. I Know i ran into alot of problems when the fuel switched a couple of years ago and i was told that the new low sulfur diesel had alot to do with the problems that i had. i have since not run into it since adding a additive to the fuel. most of the problems i had with my powerstroke had to do with low power and poor fuel economy. But now im Stoked that i can lay a strip when ever i want to. :]

Sean

ZMAX, Slick 50

Dont put it in a tired anything.... had an old chevy w/396 and it was pretty tired... the additive caused major blow by ( compression went to hell), a mild knock turned into about 7 knocks and loud as it gets.... had to park it and rebuild before i wanted to. Could have gotten another 50k outta her had i kept running mud, im sure of it.

Did run it in the wifes lil Jap truck and at 175k all is fine but you can do that with oil changes and some TLC no prob, now when she gets to 300-400k i might begin to think it is actually doing something worth while....

i can do 2 maybe three oil changes for the price of the additive... so till i got it in some sort of proof to myself.... it stays on the shelf lol

JMHO

PPW

Really, why?

If your going to make a post like that you better back it up with some useful information.

So you're working for them?

Alrighty, then! So now there's like what about a dozen fuel adds claiming unbelievable MPG improvements?

I'll leave the the fuel mileage issues to my right foot, thank you very much. That's not what I want from a fuel add.

I was liking what I was reading on their site until I dropped into their forums and read this reply from the company: (When asked: "Will I see immediate improvement in my fuel efficientcy")

"In most cases YES. For some older diesel engines it may take 3 or more tank fulls. With pre 2000 model yr engines the fuel economy was so bad that even a 20% increase is hard to notice. However you will still help your diesel last longer by cleaning the fuel system and giving the engine the lubrication needed to run todays ULSD fuels with no fear of mechanical break down due to dry fuel."

I'm sorry, but everything I know points me to the fact (/belief) that older diesels get better mileage! In fact, the worse mileage possible is out of the newest emisson laden diesels! So, I decided that I didn't like what I saw on this additive . . . Besides, even a class 8 truck that gets the poorest mileage of all can and do find smaller increases in mileage and go after them. So just the part of their statement that it is too hard to measure / track mileage increases when getting such low / small mileage numbers to begin with is a very poor understanding of the real world. To me it just goes to show that most people really don't track their mileage or know how to . . . . :pca1:

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I just couldn't resist. Here is another quote from the company in their forums:

"Hello and thank you for your questions. The lab we used was and is the test lab for the EPA in our area. The EPA must test all additives in order to be sold to the public. A lot of additives do not do this testing. The problem is there are no EPA police to stop them from selling their snake oil. We wanted to be sure what we produce is the best additive available. The testing took us 5 years and the EPA lab 1 yr. The lab results are the only true way of testing. In a lab you can control the tests in a more efficient manor. In the real world or driving tests it is very hard to match like conditions. Since the variables are to great. Such as how hot it is at testing, road conditions, tire pressure, wind, weight in the test vehicle etc. What we have seen with our clients are a range of 10% to 15% and is some cases as much as 18%. We truly do have the latest technology in diesel additive

To read the test results better, click on one of the chart graphs. On each page it will give you the definition of each category. The base line was just pure ULSD and run for 200 hrs. Then the lab added Diesel Fuel Boost. You can see the difference between the two.

Our secret is in our ability to increase the BTU of diesel fuel, without creating additional heat. As you can see the horse power stays about the same. Other additive companies want you to think that by adding cetane and creating more horse power you save fuel. This is a fallacy in the additive and diesel fuel world. Cetane is a unit of measure only. It does provide better starting and engine smoothness but does nothing for horse power of fuel economy.

I hope this answers your questions. If not please don't hesitate to ask away.
Thank you."

:scare2: