Used Motor Oil?

[GDMRTN]

Yeah, I tried gear oil once too. Stuff burns terrible hard and stinks. We have a waste oil furnace so all my gear oil goes into that.

 

[Vaughn MacKenzie]

I always burn engine oil, but anything that comes out of a transmission, differential, transfer case, power steering, etc. always goes to the recycling center. . . not in my fuel tank.

 

[78cummins-wagon]

any reason why no trans. ,diff. , or transfer case oil??

 

[DeezelDood]

has anyone heard of using used hydrolic fluid? i work at a john deere dealership, and have access to large quantities at a time. any help would be appriciated

I have a friend who's been running used hydraulic oil in his 2nd Gen for years, about 5 gallons a fillup. He runs the oil through a 2 micron filter cart. No cat, no muffler, and 4 inch exh. The only benefit I see is that the oil is free. If one is determined to burn lube oil, hyd oil seems to be a better choice. It's viscosity is lower, and the relatively thin additive package is aimed at oxidation and corrosion. Motor oil additive packages must neutralize by- products of combustion, which turn into acid. The BN additive is by and large a calcium compound. I see no benefit in running calcium through the fuel system and combustion process.

 

[Vaughn MacKenzie]

any reason why no trans. ,diff. , or transfer case oil??

Because I don't filter my oil before burning it (let it settle a few weeks though). . . I don't burn anything that came out of a unit without its own oil filter.

 

[78cummins-wagon]

so would it hurt anything if you added DSE additave to hydrolic oil? would that be more along the line of using DSE additave with veggy oil?? the reason i ask is that i cant find ANYONE in the reno area that wilgive me their used veggy oil. and i know for a fact that i can get hy-gard (JD hydrolic fluid) frequently...

 

[PRout]

Because I don't filter my oil before burning it (let it settle a few weeks though). . . I don't burn anything that came out of a unit without its own oil filter.

Can sure understand that Vaughn. I ended up sort of in an overkill situation on the filtering, because that oil was diluted with a lot of diesel, then continuously re-circulated through a frantz (sub-micron as stated above) for weeks before allowing it to mix with the main tank, and that mixing was done sparingly. As I said, no "known" problems, but i guess the best way to confirm that would be to look at the injectors, & exhaust circuit for foreign debris buildup, but I seriously doubt that would show much since it is in low enough quantities to be blasted clean anyways.

 

[78cummins-wagon]

so what about DSE additave in hydrolic fuid?

 

[Vaughn MacKenzie]

PRout that fuel should be a lot cleaner than anything that comes out of a diesel pump

78Cummins I think mixing the DSE at the normal amounts wont be enough to thin it down, but I think if you were to do a mix of say 50/50 with diesel, then add to that the DSE ingredients, then enough gasoline to be 5% of the total mix you'd be in the ballpark. But the best thing would be to do some of your own experiments. Have a beaker of diesel, then take some of the hydraulic fluid and mix a beaker in the approx. ratios I mentioned above & see if the viscosity is similar to the diesel. . . but err on the side of making it thicker, you do not want it to be thinner than the diesel.

And one thing for sure, use a quality diesel fuel additive and more than double the normal amount so you'll have yourself covered with detergency, cetane, etc. that the hydraulic oil may be lacking.

But let me caution, when it comes to these fuel "experiments" each person is on their own. . . if a fuel system failure occurs it's your own consequence to deal with.

 

[Matt400]

What if you had an abundance of motor oil from a fleet of vehicles & or equipment.



Could you do something like this guy did:

Dieselcraft Centrifuge for WVO



except with motor oil and then just mix it in with the diesel on fill ups?

 

[78cummins-wagon]

Hmmm. from what i read about the DSE additave, you put it into veggy oil and you can run it straight through the system with out having to use diesel also. hydrolic fluid is about the same consistency as veggy oil, so i dont see what could hurt... but i will ease into it and not go full at once...

 

[Vaughn MacKenzie]

Bumping to the top since this subject came up again

 

[cj hall]

hey vaughn,



you and I know what DSE is made from adding it to oil would be helpfull in thinning it also most hyd fluid is 10 w oil , so this will work



The amount of RUG might need to be different and more cetane will always help



a centerfuge would be the best way of filtering the motor oil this will clean the oil and dewater it all at the same time.



just as long as the motor oil will mix with the vegetable oil and mix with the diesel along with the gasoline and other additives we put in the fuel my thoughts are they will it would work.



I have seen engine oil burn in a genset diesel 2/71 detroit and it runs great the only thing is its smokes but this was at 100% oil as soon as we added vegoil to the mix it got better if we ran 75 veg oil and 25 % engine oil no other additives is ran great the only problen it would not start on this blend we added the gas ,cetane ,dse and power service to the mix and it was fine. ran over 100 gallons waste engine oil and never had an issue. the oil came from an auto slavage yard so it was a blend of whatever was out there sat for 2 months before we used it. bottom 3 inches of the drums looked like road tar.



cj hall

 

[EthanWhite]

Does this system work any comments/ Thinking or running it in my 98. 5 24 v.

 

[EthanWhite]

Bumping ttt

 

[cj hall]

what system are you talking about?

 

[Midnite]

I routinely burned used engine oil in my '92, and continue to do so in my 2000, although to a lesser extent.

There's absolutely no need for any kind of system, or even any filtering (as long as you have the time to allow it to settle). I've always used the same method as Vaughn, although I've always let the oil settle a little longer, generally from 3 to 6 months. After 6 months, the top 2 to 3 inches of oil in the bottle (I always pour it back into the bottles when I did an oil change) would look like brand new oil. Clearly even the soot is settling out. Like Vaughn, I leave the last two inches or so in the bottle when I add it to the fuel tank.

Any home brewer will understand the benefits of settling--home brewed beer is allowed to settle so that the dormant yeast cells will fall to the bottom of the fermenter. I guarantee you yeast cells are a heck of a lot smaller than the dirt, soot, and other contaminants in waste oil from a diesel engine.

About the only caveat I would add to burning waste oil is that I wouldn't burn waste oil that came out of a gas engine, given the amount of water that's produced as a byproduct of gasoline combustion.

Mike