Black Diesel Fuel???

[HBarlow]

What did I ever ask, especially from you? Its amusing, reading through this thread I see everyone with different opinions, and thats the nature of the beast. We all have different experiences that lead us to think differently and have different views from one another. But your the only one who thinks he has the right to get on here and bash somebody because its a different way of thinking. Its almost like your overcompensating for something else you dont have, Harvey. Oh, and to your last statement... hes got 346,000 on the clock minus whatever he put on it the first 3 years. Let me spell this out as clearly as I can and then Im done with this thread because Im sarting to feel like Im arguing with a brick wall - I am in no way promoting this I would never run it in my 24 valve. The op simply asked if we (not just you Harvey) had heard of anybody doing this before. I have therefore I answered. End of story.

Different opinions? Where? I didn't see anyone who agrees it's a good idea. Several said they were aware it had been done on old 12 valve engines.

 

[JR]

Again, where in this thread have I once said it was a good idea????? I simply said there are differing opinions. That means some people have used it with no ill effects. Others havent and dont want to. I simply shared my experiences of somebody who has used it with no side effects. DIFFERENT OPINIONS. Is that clear enough? Or are you going to twist that around too and put some more words in my mouth? I swear I MUST be talking to a wall here. Why dont you go over to the post on the lubricity test they did a few years back and rag on them they tested used oil as a lubricant and it actually showed better lubricity than 4 or 5 name brands. Have you badgered them for running their tests?

 

[Shadrach]

Cummins actually sold a system for burning used oil. It had an optional make up tank for clean oil and it used a small amount of oil from the pan and would blend it with your fuel and replace it with the fresh oil. It would extend oil change intervals and would save fuel. You still had to change the oil filter between oil changes. The amount of used oil it blended depended on how much fuel you burned up. It was marketed for class 8 on highway trucks and industrial engine over 10 litres, but this was before the HPCR engines came out. It was called Centinel. Here is the official blurb: https://quickserve.cummins.com/info/qsol/products/newparts/centinel.html
Shad

 

[JR]

Sounds like your delicate feelings were hurt. If you have so much confidence in your expert with all those degrees why'd you ask?



The guys at Cummins, Inc. who designed and have built over a million of our engines have a few degrees also. I can assure you they don't recommend burning used motor oil in Cummins engines. They're pretty clear about their recomendations printed in our owner's manual.



Ask your engineer buddy to let us know how his engine is doing with that dirty motor oil after several hundred thousand miles.

Good find, Shad. I love reading good wholesome information like you just posted after hearing uneducated and unwanted opinions like the one above. "Original engine option" and "epa certified. " Whacha think Harvey were those guys idiots too? Maybe they were tryin to sabotoge Cummins. I know, Those were a different group of engineers than the ones you were just talkin about, right? Open mouth/insert foot.

 

[Wingate]

Cummins actually sold a system for burning used oil. It had an optional make up tank for clean oil and it used a small amount of oil from the pan and would blend it with your fuel and replace it with the fresh oil. It would extend oil change intervals and would save fuel. You still had to change the oil filter between oil changes. The amount of used oil it blended depended on how much fuel you burned up. It was marketed for class 8 on highway trucks and industrial engine over 10 litres, but this was before the HPCR engines came out. It was called Centinel. Here is the official blurb: https://quickserve.cummins.com/info/qsol/products/newparts/centinel.html
Shad

there it is... for some reason I was thinking it was Racor, but it appears it was Cummins Filtration... Who knows, back in the day, JC Whitney probably sold a kit too, right beside the packages of liquid Motor Overhaul and sparkplug anti-foulers... hahahaha. .
Thats gotta be an old document, notice how they brag about being Tier-2 EPA certified!!. hahaha. . I WISH we were still at tier 2!!

 

[DennyDay]

I have been using a UMO blend of 10% since learning about the idea on http://www.thedieselpage.com/



I once had a 6. 5L GM diesel with a dying injector pump and tried using this based on info passed on by a member that mentioned a TSB from Cummins back in '93 about adding up to 10% of new or used engine oil in lieu of fuel additives to replace lost lubricity from the new LSD... This only applied to the "industrial engines" of course!! :-laf



This was a real good-money idea - - before all this polution BS became the norm - - -the new systems and the newer oil won't be happy and you will be less happy when the cost rises - - not the mileage

 

[fox]

This topic reminds me of a friend who comes up with idea's like this, then asks me what i think of it.

As I explain what I know he asks a different way then trys to get me to support it all. Why even ask?



If that UMO is not good any longer with . 001 clearances, is it good with . 00001?

If it is too dirty at those clearances it appears to be even worse at the tighter clearances.

Then add in some silicon ( dirt) and chemicals that prevent burning, hmn, not a good idea.

And that is from experience. Short term it might be ok, if you can afford the repair bills or choose to trade it.

Long term not wise.

 

[Bunyan]

Update. Well the damage is done. I notice that his truck had been gone for a couple weeks and then it returned home. With a quick handshake and a confused look, he said I had four infectors go bad. The same thing happened a week or so ago. This time the last injectors and either both the lift and fuel pump damaged too. The truck sounds horrible. By the way his fuel mixture now is 80% used oil to 20% fresh diesel. Tough road to travel. Maybe he'll listen if some others would tell him about this. It's hard to watch a person do this, but their mind is made up. I would like to know what the dealers shop charged him for both inccidents, three and a half weeks in the shop total.

 

[BIGNASTY]

Is that emphasis in the right spot? Should it be "big" genius or big "genius"? :-laf





However, I have to agree with HB and EMAC2. The potential for damage from the additives and compounds in the oil pose a problem, both in the combustion chamber and the fuel system. Acids and compounds not conducive to lubrication will eventually wear on tight tolerance systems. Filtration can only remove solids, not dissolved compounds that oil will encapsulate.

Sense I cant spell I thought it should be " BIG A SET OF GENETAILA AS MARVEY IS "

 

[cerberusiam]

By the way his fuel mixture now is 80% used oil to 20% fresh diesel.

Did you get that right or flip the percentages????

It is a wonder it runs at all.

 

[Joseph Donnelly]

Stupid is expensive. You can't fix stupid. Be careful because in extreme cases, the IQ of anyone nearby will be drained down 10-20 points in minutes, lol.

 

[Mikey-KE7LBB]

80% UMO??? WTF??? No wonder he screwed something up!!



I've been using somewhere around 10% max for dang near 10 years in my '92 without issue. Heck, I've even run straight JP-8 and even B-100 in it, but I still hesitate to put anything but CLEAN GREEN #2 in my '09 for this very reason...



EDIT: Exhaust smelled just like a bag of Doritos without the cheese while running on B-100!! :-laf

 

[Bunyan]

Did you get that right or flip the percentages????



It is a wonder it runs at all.

The percentages are what he said. The way the engine sounds when driving away is aweful. I wonder how it is still running.

 

[AMink]

Why would anyone do that to any vehicle? I wouldn't even put that mess in a Ford! It might have worked in the way back when tolerances were looser and mechanical injection was high tech. The HPCR's are just too touchy when there's guck in the tank.

 

[HBarlow]

Hey Mason - give us an update now. Do you still think the "engineer" dumping dirty black used motor oil in his fuel tanks is a genius?