here is something to ponder about Diesel Fuel Lubricity

**Canadiandiesel** · 05-09-2013

This is a PDF of fuel lubricity from CARB and Bosch, quite the interesting read and makes you think

022003bosch.pdf

**Polaraco** · 05-10-2013

We had a discussion a few months ago about this. Many of us are running 2 cycle oil for this reason. The problem is there is no formula. I've been using about 6z per 15 gal. Better than nothing.

Wally world has an inexpensive gallon of it in the oil section.

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**Overboost Diesel Performance** · 05-12-2013

i just use old motor oil. works pretty good

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**Rockwerx** · 05-13-2013

Originally Posted by Compressionign

i just use old motor oil. works pretty good

According to tests done, used diesel oil is not very good as a fuel treatment. Some of the older mechanical injected engines seem to tolerate the contaminants from running used engine oil, but high pressure common rail systems do not. I will add that the carbon "husk" produced in later model diesel engines is very abbrasive compared to the carbon "husk" produced by a mechanical injected diesel engine.

One should not run ATF (used or new) in the fuel as ATF has microscopic grit in it to help the clutches grab...not good at all for the injection system.
'

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**Overboost Diesel Performance** · 05-13-2013

I been in arguments with others on other forums about this subject. So im just going to leave it at that and be done with it. No dont run it in commonrails but mechanical I dont see the problem. .

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**Polaraco** · 05-13-2013

The only thing I have to say on that is it has a higher flash point than diesel fuel. Where the Flash point on 2 cycle oil is very close to diesel

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**Rockwerx** · 05-13-2013

I have had good luck running 2 stroke oil off and on in our diesel equipment for a few decades now. Some of the CAT opperators I have worked with used to pour a gallon of new engine oil into the fuel tank when they were filling up. They believed it helped to lube the injection system (when low sulfer fuels were introduced) and also add a bit more hp...IMO 2 stroke oil is a better and more cost effective solution.

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**rob d** · 05-13-2013

I use this every fill up 1ounc per 32 gal. Good stuff used if for 4 years now. Little more hp and fuel mileage and runs smoother.

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**Polaraco** · 05-13-2013

Problem with that stuff is the cost. I like to figure out what it costs me per mile too. I think I paid 12.50 at wally world for a gallon of 2 cycle oil. I use 6 gallons per 1/2 tank. Goes a long way.

I've been using 12z water bottles. I repack the oil in those bottles so it's easier to pour and meter the amount. I'm not too cheap. I have a fuel additive silimar to that which enhances MPG too. But it's expensive as hell. The payback doesn't outweigh the costs with that stuff.

However you do it, it's important to keep those pumps lubed. At least until the pump manufacturers catch up.

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