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Hello have been adding Marvel Oil to each tank of fuel,any opinins on this practice, The fuel we get is very dry with little lub in it , after owning a crane rental buss for 25 years and spending thousands on inj pumps and injectors we now add some type of lub to the fuel, any expert opinins out the there!! Thanks KDUD
 

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There's a post here somewhere that shows a table of independent tests and if memory serves, Marvel Mystery Oil actually DECREASES lubricity. Weird because I always used it in my air tools many moons ago.

I'll try and find the link or someone else will pop up soon with it.

Oh ... back to your question. i use Schaeffer's and have used Walmart 2 cycle oil in the past.
 

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i use Power Service "Diesel Kleen" engine runs quieter and + 1 mpg.
alot of people use a tc-w3 rated 2 stroke oil mixed at 1 oz. per gallon, i tried it at that mix but lost 4 mpg.
I also tried 16 oz of 2 stroke mixed with 9 oz diesel kleen and seemed to work great.
42,000 miles mostly all with diesel kleen
 

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OK I found the chart on my computer but not online to link to so here are a few snippets of it. The micron number is the number of lubricity better or worse than the baseline ULSD fuel.


Marvel Mystery Oil
Gas, Oil and Diesel fuel additive (NOT ULSD compliant, may damage
2007 and newer systems)
HFRR 678, 42 microns worse than baseline fuel.
320:1 ratio
10.4 oz/tank
$3.22/tank


Power Service Diesel Kleen + Cetane Boost
Multi-purpose
Cetane improver, bio-diesel compatible, alcohol free
HFRR 575, 61 micron improvement
400:1 ratio
8.32 oz/tank
$1.58/tank


Schaeffer Diesel Treat 2000
Multi-purpose + anti-gel
Cetane improver, Emulsifier, bio-diesel compatible
HFRR 470, 166 micron improvement
1000:1 ratio
3.32 oz/tank
$1.87/tank


Super Tech Outboard 2-Cycle TC-W3 Engine Oil
Unconventional
(Not ULSD compliant, may damage 2007 or newer systems)
HFRR 474, 162 micron improvement
200:1 ratio
16.64 oz/tank
$1.09/tank
 

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I use the same stuff here... Works great

i use Power Service "Diesel Kleen" engine runs quieter and + 1 mpg.
alot of people use a tc-w3 rated 2 stroke oil mixed at 1 oz. per gallon, i tried it at that mix but lost 4 mpg.
I also tried 16 oz of 2 stroke mixed with 9 oz diesel kleen and seemed to work great.
42,000 miles mostly all with diesel kleen
 

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you'll have to check out Mopar1973Man's website on the whole 2 stroke fuel mixture did a very good write up and backed with extensive testing. www.mopar1973man.com
 

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Correct me if I'm wrong-but I thought the common rails didn't really NEED a lubricity additive-but I've always used dino 2-stroke @ approximately 100:1 in both my '93 6.2 & my departed '02 Dodge VP44 with good results.
 

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50% of Sea Foam is naptha and rubbing alcohol.

Wouldn't even consider putting it in my tank.
 

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Correct me if I'm wrong-but I thought the common rails didn't really NEED a lubricity additive-but I've always used dino 2-stroke @ approximately 100:1 in both my '93 6.2 & my departed '02 Dodge VP44 with good results.
Need is subjective.
Anything you can do to improve the lubricity of your fuel would only be beneficial.
The only thing lubricating your CP3 pump and injectors is the fuel running through them.
 

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FWIW, this is the stuff I've been using for years on my diesels for all-around treatment. No solvent chemistry and very low volume mix. But it is a little expensive.

PRI-D

PRI Advanced Fuel Treatments

I don't run it very much in my Cummins. With that truck, I try to use B5 bio-diesel which offers HUGE improvements in lubricity without the other issues associated with higher percentage bio product.
 

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I use mostly power service. I tried 2 stroke for a couple of months but my truck didn't like the 1 ounce per gallon. it ran better on 1/2 ounce per gallon. If you can get bio diesel then that's all you need. Just keep an extra filter handy as it will clean out your fuel system and clog filters.
 

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I run 11oz of Lucas to a tank. Quiets the motor down and gave me a 2 mpg increase hand calculated!!!! No joke. I went from 13.5 to 15.5 on winter fuel driving 12 miles a day.

Now that the weather is getting warmer im averaging 16.4 in town.
 

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FWIW, this is the stuff I've been using for years on my diesels for all-around treatment. No solvent chemistry and very low volume mix. But it is a little expensive.

PRI-D

PRI Advanced Fuel Treatments
PRI-D has some ingredients in it that are not usually found in over the counter diesel additives.

It contains Shellsol D60 (which the Shell corp. lists as an industrial solvent), amines (generally used in fuel additives to remove CO2 from combustion gases), and organic dispersants (generally used to break down particles in fuel systems, so they can pass through fuel filters and through the injection system).
 

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PRI-D has some ingredients in it that are not usually found in over the counter diesel additives.

It contains Shellsol D60 (which the Shell corp. lists as an industrial solvent), amines (generally used in fuel additives to remove CO2 from combustion gases), and organic dispersants (generally used to break down particles in fuel systems, so they can pass through fuel filters and through the injection system).
Since you seem to be a student of MSDS, with the exception of the Shellsol D60, do you feel there is anything potentially harmful about the other additives ? I assume the D60 is there as a base liquid to carry the other additives.

The MSDS says it's ~40% by weight Shellsol D60. At a suggested treat rate of 1:2000 (less then 1oz for 30 gallons), that's not much volume. Now, the stuff is primarily a stabilizer, which is how I use it. But, they say it 'greatly enhances ULSD lubricity', although I can't find any test numbers.
 

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Since you seem to be a student of MSDS, with the exception of the Shellsol D60, do you feel there is anything potentially harmful about the other additives ? I assume the D60 is there as a base liquid to carry the other additives.

The MSDS says it's ~40% by weight Shellsol D60. At a suggested treat rate of 1:2000 (less then 1oz for 30 gallons), that's not much volume. Now, the stuff is primarily a stabilizer, which is how I use it. But, they say it 'greatly enhances ULSD lubricity', although I can't find any test numbers.

I might be concerned running the dispersants in a HPCR fuel system. I would rather have particles in my fuel caught by my fuel filter, and not broken down to a size that gets through the filter and is run through the injectors..... that sounds like a good way to erode the ball seats and wind up with leaking injectors.

I agree with you, as I can't find any ingredient that should enhance lubricity either.


BTW, here is the link to the lubricity test referenced by PowDuck

Lubricity Additive Study Results - Diesel Place
Just a heads up about testing like this that uses HFRR or other ball on cylinder type testing. The U.S. Army and the ATSM (responsible for the current lubricity standards of diesel fuel) are among the groups that say these types of tests are only useful to get base numbers for untreated and batch treated fuel, and are not useful for determining accurate lubricity numbers for small amounts of additives added by the fuel user.
 
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