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#2396287 - 10/04/11 05:44 PM Re: 2T oil in Diesel to improve lubricity [Re: bullwinkle]
2cool Offline


Registered: 07/13/11
Posts: 694
Loc: Delaware
I run 1oz/gal. in my 7.3 Ford and VW TDI. The butt dyno says it idles smoother, seems to rattle less under load up a hill, but has no measured effect on economy. I do it because I AM A BITOGER!!!!!!

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#2741292 - 09/11/12 11:37 PM Re: 2T oil in Diesel to improve lubricity [Re: drop]
FrankieFX Offline


Registered: 09/11/12
Posts: 8
Loc: Ontario
Running used motor oil with in diesel is terrible idea. No profit generating company would ever conceive the notion.

Diesel engine use high pressure in the injection system to maintain efficiency and risking clogging these with contaminants and metal particles is bad idea.

Also the HFRR lubricity test with used motor oil shows almost no benefit.

I worked with oil and gas companies that run diesel engines 24-7 at full load and consulted on reliability. There are companies producing plant derived anti-friction esters that perform with 55% score at crazy ratios of 200 ppm. That a 1/4 oz per 10gal and this is what is being used in big heavy industry.

Also using motor oil in a diesel engine will increase cylinder and exhaust heat. Potentially 5-10% due to the slow burn. Friction additive in motor oil do not burn well and will deposit. 2-cycle additive are very different and would be better choice between the two.

Throwing a big mess in your fuel also reduces fuel economy. The less you goo it up the better output you will get. Oxygen needs to move trough your fuel droplets, otherwise you get a pyle of soot.

There is company call Lubriflux and their main product is DieselFlux. Its being used on petroleum rigs and by far the most lubricative product we tested. It was 1oz per 10gal but cut component wear in half. I'm not sure if they sell to the public but might be some thing to check out.
_________________________
Nissan 350Z - Red Line 5w30
Chevy z24 - Valvoline high mileage 5w30
Puch maxi moped Lubriflux 2charge 2-cycle

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#2741620 - 09/12/12 11:25 AM Re: 2T oil in Diesel to improve lubricity [Re: FrankieFX]
bullwinkle Offline


Registered: 10/09/04
Posts: 6575
Loc: Cincinnati, OH, USA
Looked up the Diesel Flux-$250 per GALLON!?! I'll never complain about the price of Power Service nor MMO ever again!! At that price, injectors would be cheaper!

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#2769359 - 10/11/12 01:05 AM Re: 2T oil in Diesel to improve lubricity [Re: drop]
AVB Offline


Registered: 05/20/12
Posts: 789
Loc: Georgia
I have been told that hydraulic fluid is a good diesel additive. They claimed it adds sulfur to the fuel. This is third hand information supposedly recomended by a well known diesel shop.

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#2963933 - 04/05/13 10:56 PM Re: 2T oil in Diesel to improve lubricity [Re: drop]
morris Offline


Registered: 08/24/08
Posts: 3681
Loc: ks, wichita
the test by the diesel place. is not done well in my opinion. 1. each lube is used at a different ratio. 2. then at the end this is,posted.::::::::::::::::::::::::::::::::::::::::::::::::::::::::

Products 16 through 19 were found to cause the fuel/additive blend to
perform worse than the baseline fuel. The cause for this is speculative. This
is not unprecedented in HFRR testing and can be caused by alcohol or other
components in the additives. Further investigation into the possibilities
behind these poor results will be investigated.
Any additive testing within +/- 20 microns of the baseline fuel could be
considered to have no significant change. The repeatability of this test allows for a
+/- 20 micron variability to be considered insignificant.
::::::::3. is speculative.? 4. and the test is done with a ball bearing. not pistons, valves ect. in my opinion the test has meaning only in very narrow range of material.

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#2963993 - 04/06/13 01:49 AM Re: 2T oil in Diesel to improve lubricity [Re: AVB]
Shannow Offline


Registered: 12/12/02
Posts: 35975
Loc: Oz
Originally Posted By: AVB
I have been told that hydraulic fluid is a good diesel additive. They claimed it adds sulfur to the fuel. This is third hand information supposedly recomended by a well known diesel shop.


sulfur isn't the issue, it's the things that are taken out, or molecularly changed when the fuel is desulfurised.

I can send you a block of elemental sulfur, incidentally, it was most probably obtained from desulfurisation of oil at a refinery...which has dropped the price to only a couple of hundred bucks a tonne

edit...just for interest, the cockatoo yellow mountains of sulfur at refineries are pretty amazing...look at link for a pile of prilled sulfur, bigger than football fields.

http://www.airphotona.com/image.asp?imageid=3874



Edited by Shannow (04/06/13 01:57 AM)

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#2970741 - 04/12/13 04:53 PM Re: 2T oil in Diesel to improve lubricity [Re: FrankieFX]
skellyman Offline


Registered: 03/04/12
Posts: 368
Loc: Mo.
Originally Posted By: FrankieFX
Running used motor oil with in diesel is terrible idea. No profit generating company would ever conceive the notion.

Diesel engine use high pressure in the injection system to maintain efficiency and risking clogging these with contaminants and metal particles is bad idea.

Also the HFRR lubricity test with used motor oil shows almost no benefit.




I think it odd Cummins offers the Sentinal system on it's Diesels, it puts used oil in the fuel system an adds new fresh HDEO to the engine from a tank.
Will wonders never cease.




Edited by skellyman (04/12/13 04:57 PM)
_________________________
I sold and used Skelly Supeme an Supreme Plus
Now I use Mobil Oils
99 Dodge I-6 Delvac 15w40
01 PT Cruiser Mobil Super 5w30

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