I have a 97 GMC 3500 CC dually. I started making what they call black diesel. You use used motor oil and cut it 50/50 with diesel fuel. I made a couple 5 gallon batches and put them in the truck with no problem. (the truck had less than a 1/8 tank of fuel and i added 5 gallons of "black diesel") i had no problems with the truck at all ran the same started the same just smoked a little more. Then i made a 25 gallon batch and put it in the truck tonight. I went around the block and then teh SES light came on. The truck starts a little harder but the guy that i talked to said it would. Nothing crazy just a few more cranks. It still runs fine but the SES light is on. I have to wait untill tomrrow at school to run codes to find out what it is. I thought i read somewhere that there was a optical sensor some where in the fuel system. If there is then my bet is that the new fuel is "tripping" it.

Thanks Alex

The optic sensor is in the fuel solenoid which is part of the injection pump. This sensor is critical for the IP to run correctly. I would stop using this snake oil in the electronic injection pump.

No, no, no, CharlieP - you've got to realize this =

Used motor oil contains all sorts of combustion byproducts, including soot and ash, various oxides of noxious, degraded detergent additives, and many corrosive acids which are all very good for the precision Stanadyne Inj Pump.

Not to mention that all modern motor oils are formulated for turbocharger service, with increased resistance to high temperatures required to reduce self-ignition.

The more motor oil you add, the lower the cetane rating of the Diesel fuel.

And, as we all know, Diesel engines do not run well on fuels with excellent self-ignition qualities - has to do with something called the CETANE rating.

The lower the cetane rating, the more power a Diesel makes...........right?

Right?

C'mon, CharlieP - get with the program......................

:funnypost

you guys do realize that i am filtering this many times through .05 micron filters and putting a catalist (spelling) to help break down some items in the oil.

Alex

Alex, blending WVO/SVO is one thing but soot is VERY abrasive and sub-micronic in size. I'll bet your code is an optic sensor problem (like CharlieP said) and you ARE heading for trouble.:badidea:

No, no, no, CharlieP - you've got to realize this =

Used motor oil contains all sorts of combustion byproducts, including soot and ash, various oxides of noxious, degraded detergent additives, and many corrosive acids which are all very good for the precision Stanadyne Inj Pump.

Not to mention that all modern motor oils are formulated for turbocharger service, with increased resistance to high temperatures required to reduce self-ignition.

The more motor oil you add, the lower the cetane rating of the Diesel fuel.

And, as we all know, Diesel engines do not run well on fuels with excellent self-ignition qualities - has to do with something called the CETANE rating.

The lower the cetane rating, the more power a Diesel makes...........right?

Right?

C'mon, CharlieP - get with the program......................

lol.....hey gmctd - I think you should type your sarcastic comments in blue so that some folks on here don't get mislead.....:lol:

I think you are out of your mind to do this. Maybe with a 93 non electronic 6.5, or an old 12 valve Cummins, and even though it would run, it's a smokey, stinky awful mess. If you want to save money, go find a restaurant and convert to veggie. I'd be glad to offer any advice on how to do this properly.

If all those "processes" are so wonderful, why is the result called 'black Diesel'?

If the"process" really worked, the oil would be as clear as the originally-refined product, would it not?

Even, you would be whacking away at the cetane-rating of the #2.

Do I appear extremely skeptible, or is it just me?

What's skeptible????:confused: :muahaha:

well i got the codes. p0251 = injection pump cam system. p0370 =Timing reference high resolution. I cleared it we will see what happens.

alex.

I under stand what you guys are saying. and i agreed with you at the begining but after talking to a few people i said why not. One runs it in his 02 powerstroke. and the other in his 03 duramax both with 75,000 plus miles running this. Again not that im not agreeing with you because i do. But hell i have the kit now so why not use it.

Cool - ask your buddies which Stanadyne Inj Pump is bolted down in between the heads on each\either truck........................

well i got the codes. p0251 = injection pump cam system. p0370 =Timing reference high resolution........................................ .............But hell i have the kit now so why not use it.

See then, you're all set.

Why not use it??? Hasn't every response posted on this thread been a good indication as to why you shouldn't use it???