Diesel Fuel Additive Question
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Senior User
Joined: Jun 2006
Posts: 141
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From: La Porte, TX
Diesel Fuel Additive Question
Some one told me to put transmission oil in the diesel tank for lubrication. Has any one herd of this or is this a good idea? I have a 6.0 and 7.3. If so how much should you put in and how often?
Post Fiend
Joined: Feb 2007
Posts: 14,541
Likes: 2
From: Dallas-Ft. Worth
I wouldn't put it in either. Use a fuel additive meant to be there. A lot of us use PowerService Diesel Kleen, but there are a bunch out there that are as good. I use it because I can get it at Wal-Mart for cheap. Some folks like 2-cycle oil, but I tried it, and didn't care for it. DK adds lubricity *and* Cetane...
Laughing Gas
Joined: Nov 2004
Posts: 790
Likes: 35
From: Austin
The DieselKleen stuff is what I use. It really quiets the injectors and gives more power. I'm not sure if it gives any fuel mpg gain, but it claims to.
I just drove 600 miles the last two days and averaged 18.6 mpg on the hwy.
I just drove 600 miles the last two days and averaged 18.6 mpg on the hwy.
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Joined: Feb 2009
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I prefer using a little bio every tank as well as Diesel Kleen. Bio has better lubricity than any additive and in small amounts won't gel any faster during winter.
Postmaster
Joined: Jan 2009
Posts: 4,006
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From: AL, Reform
as far as transmission oil i read some where that they ran these on old transmission oil they got from a shop they cleaned it and it ran better on transmission oil than diesel, with on smoke. i cant confirm this but it might be ok, i use DK.
Lead Driver
Joined: Jan 2006
Posts: 7,308
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From: Hartford, WI
If there is more BTU, it should show on both the dyno and mpg.
Lead Driver
Joined: Jan 2006
Posts: 7,308
Likes: 250
From: Hartford, WI
Do you trust that all the crud in the trans oil is out? Are the injectors going to like it?
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Mountain Pass
Joined: Oct 2005
Posts: 191
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From: NH
New Transmission oil burns nice and quiet in the trucks we service at work. We fill the fuel filters with it. Standard ATF. We use only new fluid. Not used. You can hear the difference. I'm sure there are many who would be skeptical, but I'm just sharing my experience. It cant be compared to DK or other additives....it just helps lube the fuel system.
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Logistics Pro
Joined: Aug 2009
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From: Arizona
New Transmission oil burns nice and quiet in the trucks we service at work. We fill the fuel filters with it. Standard ATF. We use only new fluid. Not used. You can hear the difference. I'm sure there are many who would be skeptical, but I'm just sharing my experience. It cant be compared to DK or other additives....it just helps lube the fuel system.
I used to always fill my 6.9 spin on filter with fresh tranny fluid when I would change it.
I have a spin on pre pump filter on my 7.3, sure would be nice if I could fill it with tranny fluid instead of having to go buy a can of diesel to prime it with.
Lead Driver
Joined: Jan 2006
Posts: 7,308
Likes: 250
From: Hartford, WI
So once again, how do you sperate engine sound from injector firing? IIRC, they are a clicking sound and the engine sound is much louder. Who knows, maybe you can ****** pebbles from a Shaolin Priest's hand and walk on rice paper without leaving a trail but I doubt that too
Lead Driver
Joined: Jan 2006
Posts: 7,308
Likes: 250
From: Hartford, WI
It burns but is it the best thing for the injectors? Sure, a filter full of it is not an issue but to burn it on a long term basis, I am not sure.
Lead Driver
Joined: Jan 2006
Posts: 7,308
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From: Hartford, WI
I am assuming you did not run the injectors on a test bench with pure D2, recorded the sound and then added the snake oil in the right proportions and recorded the sound and compared the recordings. Correct me if I am wrong.
