I have been running a litle black diesel in my '95 twelve valve, i've been filtering it through a 10 and 5M filter bag, big magnet in the tank by the outlet. I'm running it 50/50 with diesel anf tyhe truck starts and runs as normal no extra smoke and drives fine. there just onething which has me a bit puzzled th einsdie of the my exhaust is now a white/grey colour...instead of th eusual black, does anyone else experience this, or know why it is and if its good or bad?

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Ok I just read a huge thread on listereninge.com about WMO use, and one guy was getting white deposits in his motor prety dsimlar to what i'm seeing in my muffler. Now he claimed this stuff was abrassive and had damaged his bore. Buthe had no proof and hadn't run any tests to see if it was harmless dust or abrassive. Some other guys joine din and commented on th epossibility of the damage to his bore (Exhaust side) being simply caused by heat from the hotter burning oil he was runing around 90% if i remmber correctly.
Also he was using a cheap indian re make of a lister engine and the quality of the components was in question.
Itwas also suggested this white ash was non oil content i.e additives

So dos anyone know about these white deposits and egine wear with WMO in general on a Cummins?

 

Sorry to ask stupid questions but, what the heck is "black diesel"?

 

Black Diesel is used motor oil in regular diesel. He is running WMO at 50%, so the color is black.

 

Hey if you can save 4 bucks a gallon for a couple years you'll have the money to rebuild the engine

 

4 bucks a galon, and the rest!! we paying £1.45 a LITRE over here! haha. But yeah I totally agree with you but i still like to know where i'm at with these things. I've been over on Cummins forum today alot of those guys have been running trucks for hundreds of thousands of miles on WMO with no problems so i'm pretty happy with it now, i'll just try to filter it a bit better, like down to 1 micron.

 

The 2nd gen in my sig has been run 50/50+ for 40k on unfiltered wmo, used hydraulic oil, pretty much anything that will burn. We haven't had any problems with it except fuel filters now and then. I know its not good for it but we have a couple spare ip's and an engine if it goes bad.

 

Nice one! Thats put my mind at ease, if i can run for that even if it did go to bits i woulda saved £1000's and these engines are cheap. So do you get the white stuff inthe pipe too?

 

glad to see I am not the only one into this from my research the filtering should be down to .5 micron you might also look at a centrifuge this will remove the vast majority of contaminates I want to run 2 tank system with 89-90% wmo this should save your pump and as far as the white residue it is really 2 things the oil burns a little hotter and is producing some ash and it could be additives if you want more info I am compiling it we are going to try it in our farm tractors this spring

 

I am now finishingthe filtering wit 2x 1 micron bags as they are relativley low efficiency, I have looked into centrifuging but it seems to be a bit too expensive for me to get one. Plus my research is showing that alot of people are running these trucks on stuff filtered to 1 micron with no problems for serious miles.

Strangely since fitting my #0 plate and 30psi boost fitting the tail pipe has turned back to black..any ideas? I have a twin tank kit andheat exchanger which i used to run ona Mercedes Sprinter (Chrysler to you guys, I think) a few years ago, was a bit of a PITA tbh and it starts fine on 50:50 but when it comes to winter i may re evealuate my approach. I will be interested to watch your research unfold.

 

i'm almost positive it was big bad diesel that told me he just pours his in his tank and lets his air dog deal with it. i'll probably do the same