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Old 26-02-2014, 19:31   #16
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Re: Adding TCW OIL to diesel fuel to enhance Lubricity

I guess it depends some on the size of your fuel tank !! In our colvin I made a keel mounted 600 gal tank, and used all my drained engine oil mixed in the diesel in this tank ! worked for us for years! never a problem !!
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Old 26-02-2014, 19:40   #17
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Re: Adding TCW OIL to diesel fuel to enhance Lubricity

I have a Ford F250 with the 7.3 liter diesel back home and every few tanks of fuel I add a quart of ATF. My fuel mileage is better with it. I do it more for the cleaning properties, but I would think it may help with lubrication as well. Learned it from a trucker. Never thought of doing the same thing on my little Yanmar here. Not sure why.
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Old 26-02-2014, 19:44   #18
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I guess you could strain the engine oil
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Old 27-02-2014, 15:39   #19
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Re: Adding TCW OIL to diesel fuel to enhance Lubricity

Quote:
Originally Posted by Geoff54 View Post
Out of curiosity, I went looking for the test that I read and found copies in several locations.

They appear to have used the ASTM International standardized diesel lubricity measurement. Credible? Sounded credible to me and certainly better than the usual recommendations with nothing to back them up. But you be the judge:

http://www.johnfjensen.com/Diesel_fu...itive_test.pdf


In the study, Valvtect's earlier additive didn't do so well:
18) ValvTect Diesel Guard Heavy Duty/Marine Diesel Fuel Additive
Multi-purpose
Cetane improver, Emulsifier, alcohol free
HFRR 696
, 60 microns worse than baseline fuel

1000:1 ratio
3.32 oz/tank
$2.38/tank
At that time, they also sold a separate additive -- a microbiocide -- called BioGuard.

More recently, ValvTect has introduced another product called BioGuard Plus 6, which they say includes a lubricity improver.

Since ValvTect was one of the funding sponsors, I've wondered if maybe the new product emerged because of the study.

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Old 27-02-2014, 17:45   #20
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Re: Adding TCW OIL to diesel fuel to enhance Lubricity

Many of the older diesels, think 2 stroke detroit diesel with basic pintle injectors would burn just about anything that even remotely looked like a combustible oil.

Fast forward to today with good clean diesel and euro IV / V emissions that is not the case.

Additives were all the rage in the 80s and 90s but after exhaustive testing you can't beat clean fuel and well tuned engines.



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Old 27-02-2014, 18:47   #21
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Re: Adding TCW OIL to diesel fuel to enhance Lubricity

My understanding, and I could very well be wrong, is that low sulfur fuels aren't as kind lubrication wise to the mechanical injector pumps on older engines. The addition of two stroke oil to fuel enhances lubrication. Injector pumps are a major cost item if they require rebuild or replacement so there's an incentive right there to run with the theory be it fact or fiction.
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Old 27-02-2014, 19:12   #22
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So if Kerosine makes the engine run hotter can you run a diesel of 50% kero and use heat exchanger to warm your cabin?
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Old 27-02-2014, 20:26   #23
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Re: Adding TCW OIL to diesel fuel to enhance Lubricity

On my pickup trucks, I've always used on every other 10k km, 1l of kerosene on ~80l of Diesel. I rode all my cars for more than 200k km with not a single fail.
Now, the brazilian diesel is that s10 wich is very light and clean. Didn't try the kerosene mix with it yet. The transition was awkward because the lighter fuel cleaned the tank and lines. I changed the filters twice and it's quite ok.
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