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Best diesel fuel additive? #2355736 08/23/11 08:47 PM
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Donald Offline OP
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I just bought a used Bobcat and thought I would dump some fuel additive into the tank to clean up whatever might be there? I saw some CRC Fuel Therapy that is basically an injector cleaner. Good to use or not needed?


2015 Ford F-250 w/Powerstroke
2016 Subaru Crosstrek CVT (wife's)
Re: Best diesel fuel additive? [Re: Donald] #2355752 08/23/11 08:58 PM
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tommygunn Offline
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Years ago I heard of people using transmission fluid but those were old school diesel engines.


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Re: Best diesel fuel additive? [Re: Donald] #2355756 08/23/11 09:02 PM
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-Clayton- Offline
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I mainly use the Lucas stuff and Diesel Kleen. But I will dump in some tranny fluid, Motor oil or 2 stroke oil on occasion.


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Re: Best diesel fuel additive? [Re: Donald] #2355767 08/23/11 09:15 PM
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FL_Rob Offline
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Cetane baby ..Cetane

Re: Best diesel fuel additive? [Re: Donald] #2355801 08/23/11 09:38 PM
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OtisBlkR1 Offline
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Wait for it, waite for it... ??? nobodys said MMO yet ?? LMFAO.. I have no idea myself what good in your diesel.. I just got done reading yet another MMO thread so its on my brain.. funny stuff


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Re: Best diesel fuel additive? [Re: Donald] #2355859 08/23/11 10:15 PM
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BobFout Offline
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Originally Posted By: Donald
I just bought a used Bobcat and thought I would dump some fuel additive into the tank to clean up whatever might be there? I saw some CRC Fuel Therapy that is basically an injector cleaner. Good to use or not needed?


There is no one "best" additive. Just like there is no one "best" oil.

I would stick with the major diesel additives: Power Service, Stanadyne, Howes. They will clean, lube, take care of small amounts of water and the first two increase cetane. The third one says they increase combustion quality w/o the need to increase cetane (not sure how that works)

As far as universal additives: you could use Seafoam (clean, lube, take care of water), MMO (clean and lube), Lucas (clean and lube).


2003 VW Jetta TDI (Sold) / 2015 VW GTI 2.0T
Re: Best diesel fuel additive? [Re: Donald] #2355865 08/23/11 10:19 PM
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FL_Rob Offline
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WWHHATT?
dont be jokin' on that MMO.LLOOKOUT(JamesBrown)HA, here it comes ,oh ya,here we go ,come on ,come on, come on.

Re: Best diesel fuel additive? [Re: FL_Rob] #2355908 08/23/11 10:55 PM
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BobFout Offline
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Originally Posted By: FL_Rob
WWHHATT?
dont be jokin' on that MMO.LLOOKOUT(JamesBrown)HA, here it comes ,oh ya,here we go ,come on ,come on, come on.


Is this a good thing or a bad thing?


2003 VW Jetta TDI (Sold) / 2015 VW GTI 2.0T
Re: Best diesel fuel additive? [Re: Donald] #2356143 08/24/11 08:38 AM
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Donald Offline OP
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What about CRC products? They make a few for diesel fuel. Maybe just go with Diesel Kleen?


2015 Ford F-250 w/Powerstroke
2016 Subaru Crosstrek CVT (wife's)
Re: Best diesel fuel additive? [Re: Donald] #2356223 08/24/11 09:59 AM
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BobFout Offline
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Originally Posted By: Donald
What about CRC products? They make a few for diesel fuel. Maybe just go with Diesel Kleen?


CRC's diesel additive isn't as popular, hard to know how "good" it is.


2003 VW Jetta TDI (Sold) / 2015 VW GTI 2.0T
Re: Best diesel fuel additive? [Re: Donald] #2356228 08/24/11 10:10 AM
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manofscience Offline
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I just started using Fuel Performance Catalyst (FPC). It's working really well for me so far. I haven't heard a whole lot about it, but I did find a thread on this forum about it that started back in 2005. You might be interested in that.

The link to the thread on the forum is
http://www.bobistheoilguy.com/forums/ubbthreads.php?ubb=showflat&Number=286212#Post286212

Hope there is some helpful information there, and good luck finding the right additive or catalyst.

Re: Best diesel fuel additive? [Re: Donald] #2359451 08/27/11 02:11 PM
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Ken2 Offline
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First define the problem, then pick an additive that works on that problem. If fuel system cleanliness is the concern, then pick an additive that has the majority (or all) of ingredients to do that job. Kano Kreen is one, Schaeffer Neutra #131 is another, and there others. Don't get a cetane improver or lubricity improver or other product if cleaning is your main goal at this time.




Re: Best diesel fuel additive? [Re: Donald] #2359648 08/27/11 07:05 PM
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doitmyself Offline
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I agree with Ken2.

Biodiesel is an excellent cleaner by itself and it provides good lubricity. Check your manual, as some mfg. don't recommend going over B5 (5%). At my workplace, the switch to biodiesel actually caused problems with clogged fuel filters from the excellent cleaning of old systems.

Oil guru Terry Dyson used to blame "many aftermarket diesel additives" with increased bearing wear as mentioned in this old thread: http://www.bobistheoilguy.com/forums/ubbthreads.php?ubb=showflat&Number=302158

"Many of the popularly accepted diesel fuel adds HARM the bearings in your engines or do nothing to DROP NOx or reduce SOOT. I see it in oil analysis all the time." Terry mentioned Power Service in his rants. If you dig deep enough, maybe you can find them. To me, it seemed that the overuse (too high dose) was especially bad.

Another debated topic is that some additives treat the water so that it passes through the pump,injectors, engine. Others treat the water so that it "falls out" in the filter (not passing through the engine). Stanadyne is like the second example, and they claim this is a safer system.

I am not an expert on this topic, but the above ideas piqued my curiousity enough to stick with the Stanadyne product as a feel good move.

Re: Best diesel fuel additive? [Re: Donald] #2370665 09/07/11 08:47 PM
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JMJNet Offline
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2cycle oil for lubricity in ULSD.

There is a study on lubricity properties of diesel additive in DieselPlace.com under Maintenance/Fluid.


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Re: Best diesel fuel additive? [Re: Donald] #2374157 09/11/11 02:33 PM
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I would have to agree that there is no one perfect diesel fuel additive. I have been using biodiesel blends of 5-10% for several years. That sure takes care of cetane and lubricity better than most additives, and there is no added cost.

The Cummins ISX in my semi, is notorious for "cooking" diesel fuel that gets returned to the tanks. That sometimes causes a situation called "asphaltine" that can give the same black appearance on fuel filters as an algae problem. I have used various products but have found that Amsoil's diesel additive does a particularly good job for me. And the cold weather version is pretty good as well. I buy in bulk at preferred pricing, so it competes well in pricing.


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