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Old 11-26-2020, 01:32 PM   #1
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Diesel fluid additive (not DEF)

I've using diesel additive with every diesel fill-up for the last 20+ yrs. Original decision to use it was a concern with fuel gelling at low temps. That's no longer a concern. Most products claim that they lub & clean the fuel injectors. Well I just had to have all six fuel injectors replaced. Now I wondering about the wisdom of using the additives. Is there any scientific evidence as to using additives?
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Old 11-26-2020, 01:53 PM   #2
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I am also a fairly regular user of diesel additive. Stanidyne is the first flavour of choice. Most of the time it gets about 1/2 dose per fillup. My truck also spends at least 5 months a year in winter layup. For that period the tanks are full & have a full dose of Biobor JF in them.

13 years & 210,000 miles the Isuzu has not skipped a beat except for a contaminated fuel incident, but that is another story.

Does the additive make a difference? I don't know. Makes me feel better.
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Old 11-26-2020, 03:05 PM   #3
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We use power service. I think it recommended by cumnins
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Old 11-26-2020, 03:28 PM   #4
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The only thing I have used is Biobor JF every fillup, in over 100,000 miles of diesel operation, with no problems.
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Old 11-26-2020, 04:20 PM   #5
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I have never used anything and never had any issues.
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Old 11-26-2020, 07:24 PM   #6
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We have run diesel delivery trucks for the past 20+ years in my business. At least 15 so far...currently have 3. Isuzu, Mercedes Sprinters, Fords and GM box trucks. All motors have hit 250k+ without a single issue. We always trade because other components like suspension or transmissions begin to make the trucks unreliable. I have never used an additive and the commercial diesel mechanics we have used do not recommend them. But it's your $$$.
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Old 11-26-2020, 09:14 PM   #7
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Almost 190,000 miles and the only problem has been a leaking lift pump. I don't think any additive would have helped
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Old 11-27-2020, 09:03 PM   #8
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I run OptiLube Summer Blend in every tank. Studies have shown that there have been occasions where randomly tested diesel fuel has not met U.S. Government lubricity standards. Per their website....Cummins agrees, but suggest using their branded product.
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Old 11-27-2020, 09:22 PM   #9
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Quote:
Originally Posted by Ralph A View Post
I've using diesel additive with every diesel fill-up for the last 20+ yrs. Original decision to use it was a concern with fuel gelling at low temps. That's no longer a concern. Most products claim that they lub & clean the fuel injectors. Well I just had to have all six fuel injectors replaced. Now I wondering about the wisdom of using the additives. Is there any scientific evidence as to using additives?
You sure someone didn't take you for an expensive ride?
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Old 11-27-2020, 10:29 PM   #10
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Quote:
Originally Posted by Dutch Star Don View Post
I run OptiLube Summer Blend in every tank. Studies have shown that there have been occasions where randomly tested diesel fuel has not met U.S. Government lubricity standards. Per their website....Cummins agrees, but suggest using their branded product.
Opti-lube is one of the top rated lubricity additives. Oddly enough B2/2% biodiesel is rated #1 in that ISO study.
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Old 11-27-2020, 10:49 PM   #11
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I've been using Diesel Kleen for about two years now. It seems to work well. Add it with every fill up.

A few years ago on a trip to Gunnison Colorado, I had filled up in New Mexico. After the truck sat for a night in -25 weather the diesel fuel jelled. Required a tow to a heated garage and two days to thaw out. Unless I fill up in aa area with cold temperatures, it's hard to be sure what blend of diesel you're really getting. With Diesel Kleen I have not had any more troubles in similar temperatures.

I only see benefits and no down side.
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Old 11-28-2020, 08:36 AM   #12
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Originally Posted by 96 Wideglide View Post
You sure someone didn't take you for an expensive ride?
I went in for excessive smoke and they found the turbo wastegate broke, but that did not solve the smoke problem. The service was provided by a reputable Freightliner service center and was confirmed by Cummins. The best test for legitimacy is the fact that my extended warranty paid big bucks for the service.
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Old 11-28-2020, 12:43 PM   #13
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My Cummins book says to use No Additives, '14 ISL
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Old 11-28-2020, 12:53 PM   #14
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Originally Posted by Dutch Star Don View Post
... Studies have shown...
Studies have shown that people who use the phrase "studies have shown" are almost never able to provide references to any objective, documented "studies" showing anything -
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