Diesel Additives

[RBender]

mlove,



As long as you use the DFT 1500 Hammerdown, with 1 oz to 55 gallons, you should be OK.

 

[Gary - K7GLD]

As long as you use the DFT 1500 Hammerdown, with 1 oz to 55 gallons, you should be OK.



Jeeze, that's a pretty small percentage - is that stuff really that concentrated? Wonder if they have a website?



(EDIT)



Found that pointer:



www.lvpetroinc.com/advscon.htm

 

[turbinesurgun]

marvel mystery oil

you can still get marvel mystery oil pretty much anywhere even at walmart.

 

[Mike Ellis]

I use Marvel Mystery Oil in my 12V occasionally, about once every 3 tanks. It is the only additive I have used that consistently boosts my mpg, but it only kicks it up about 0. 5 mpg. This is based on quite a bit of data, I track my mileage closely and log everything I burn. The tanks with MMO have higher mpg and truck runs pretty good on it.



I have tried several of the other additives, in fact I just finished up testing one of the large jugs of Power Service (white jug, 96 oz ) that I have been running in various tanks since back in the winter. I actually get lower mpg with Power Service than plain diesel, I have noticed similar results with other brands. Besides MMO, Stanadyne seems to work about the best - doesn't boost mpg but it gives more "seat of the pants" than plain diesel and appears to a good job of cleaning.



For 12V folks, probably reasonable every 3-4 tanks to put in the cheapest product that will clean the injectors well. For 24V, lubricity of the fuel is a potential problem so it makes sense to put in a lube additive like Power Service more frequently. Very cold weather would justify putting in some anti-gel. But for every-tank use, none of them seem to be cost effective.



Just reporting my experience, I am not a dealer or stockholder or "emotionally invested" in any of the above products.

 

[Gary - K7GLD]

But for every-tank use, none of them seem to be cost effective.



UNLESS along with other benefits, you are mainly focusing on long injection pump life - clean injectors, algae protection, AND potential extension of the lifespan of that VERY expensive pump seems pretty cost effective to me - even moreso if you consider they rarely fail in yer driveway - or while at the dealer's service bay - but instead out in some VERY inconvenient location and situation.



I consider it cheap insurance, compared to the alternative - and poor lubricity of diesel fuel accellerating wear in ALL injection pumps (INCLUDING the latest systems!) is not just "theory" - it's a well established FACT!



To each his own - or like that old commercial - "you can pay a little bit NOW, or LOTS later"...

 

[jersey diesel]

What do you use Gary? tks

 

[Gary - K7GLD]

What do you use Gary? tks



AH! I see you are lazy, like me, , and didn't read the WHOLE thread, including THIS I posted here earlier:



=====



"If fuel additives are so good then why does'nt Cummins an Dodge recommend using them. Looks like they would want every advantage for themselves to keep cost down on warranty replacement parts. "



UMMMMm - well, Cummins DOES market their own fuel additive, regardless of what they seemingly "recommend" - could be that they sorta prefer that you buy THEIR company brand, instead of the competitions!



As far to varying claims by users as to "their" brand being superior, welllllll... . Sorta depends on what your purpose is for using it in the first place - I use Power Service Diesel Kleen for 3 reasons,



1. It is formulated specifically to improve diesel fuel lubricity, according to an Email from them to me when I asked them what the difference was between their DK and the Fuel Supplement they also sell - the Fuel Supplemet is more to address cold climate fuel gelling.



2. I read a lab test comparing the top diesel fuel additives, and there saw documentation showing PS came in a VERY close second in added fuel lubricity to the top-rated brand - no, I don't remember what the top one was, because...



3. PS is easily and cheaply available right at my local Walmart - so little need to run around and probably pay MORE for very little improvement.



One added comment - for those using additives specifically for the added lubricity - but only in "rare occasions" - why bother? You never know WHAT batch of fuel is most lacking in lubricity, and may harm your injection pump - and only using additive PART of the time is like a guy with a bad heart only "occasionally" taking his heart medicine - might as well play Russian Roulette for all the good it's likely to do ya!

 

[mlove]

RBender, thanks for the comeback. Have you used Hammerdown in the past?

 

[jimnance]

I recently read a scientific paper which addressed the decline in Diesel Fuel Lubricity and it's effects on engine wear. In summary, excessive hydrotreating of diesel fuel to remove sulfur results in a damaging loss of fuel lubricity.



Current fuel varies considerably in the US with respect to it's cetane rating and other measures of fuel quality including lubricity. The Europeans require a much tighter range of specs than we do here.



Very low sulfur fuel similar to that which is mandated for our markets in 2007 is in use in Sweden. They have noted very high wear rates of various components, most notably the fuel pump vanes. It seems that this may not be a big problem in the U. S. now, but by 2007 either the oil companies or we will need to add supplements to improve lubricity if we expect our fuel pumps to last.



Since current fuel is marginal in this respect, the use of something like PS in small quantities is probably not a bad idea, MMO is primarily a solvent. It may be useful for cleaning injectors and even the engine internals, but to my knowlege does not improve fuel lubricity. Again, small amounts of the stuff probably won't hurt the engine, but it's doubtful that it will help much either.

 

[NDearyan]

I went the other day to get some fuel injector cleaner, and found one at wally mart that said it was for diesel engines. On the front. As I read the label, it said to add it to the gasoline... .



I thought, that's funny!



Anyway, I did buy one, (I'd have to go look in the truck at the bottle, to see what kind) that said it was designed with some kind of partnership from Cummins. I bought it, and plan to add it to the tank, at the next fill up.



Anyway, it was just kind of funny to see someone selling diesel fuel injector cleaner, and then find GASOLINE mentioned in the instructions!





Nate

 

[badams1]

Tony T. Cummins sells their own brand of diesel fuel additive and Cummins recommends it the part is Feet-Tech by Fleet Guard diesel fuel additive and is labled formula 6862 and it treats 250 gallon for about $8. 00. Another # on the bottle is CC2597. I bought a case at the Cummins dealer here in Houston Texas. It ain't hurt nuthin yet in 5000 miles.