Putting crankcase oil in fuel

[WBissell]

I've heard many good things with the practice of adding used crankcase oil to the fuel. In my area, there are many old-time loggers who still own and drive log trucks or dump trucks. I'm told they've been putting crankcase oil in their fuel for decades!



So my questions to all you diesel guru's out there is:



1) does it make any difference if I also use used oil from gasoline engines? I was thinking some gasoline will be in the oil and didn't know if that was detrimental to a diesel?



2) I've read on this site that mixture ratio's up to 50% have been done although this seems to be in the minority. I'd like to see what the concensus is with you guys as to what you recommend. I was thinking maybe 3-5 gallons per 30.



3) I've also read that filtering the old oil is probably better. Although I've also read that many of you just let the oil sit for a few days and then use what's on top. If you recommend filtering, what kind of filtering system should I use? Will cheese cloth work or do I need something more significant?



Thanks



Wade

 

[one_ton]

Black diesel

wade,



i have been adding WMO into my tank for a little over 10K miles with no problems. just a little extra haze!



i put 2-3 gallons every fill up. i get it from freinds and co-workers. i filter mine. i run it through a paint filter, then into the tank.

you want to stay away from synthetic's. from what i have been told there flash points are hight, and the same with there BTU's. so stick with dyno oil.

i havnt had any problems with running oil from gas burners. that 90% of my oil. it really helps with the IP, and injector noise.



BoB

 

[JLEONARD]

I tired using about 1-2 quarts at every fillup... . didn't particularly like the additional smoke so I stopped.

I did it more for an experiment... I really don't need to burn it in the diesel to get rid of it as my son uses waste oil for heat at his shop and is always accepting donations.

I was just letting it settle.

 

[bgilbert]

WMO, good weed killer:-laf...

 

[boatpuller]

WMO, good weed killer:-laf...

Keeps the dust down on the driveway good also :-laf :-laf

 

[Dieselman359]

I second the weed/grass killer, we don't have to trim around the barn anymore. If you want to burn oil, find some biodiesel, IMHO.

 

[MMiller]

Dad's got a sprayer for the back of the tractor, just for putting oil on the gravel road in front of the house. The county maintainer and dad have an agreement, as long as there is no potholes in front of the house where dad oils the road, the maintainer doesn't disturb the road. Dust is kept down quite nicely.



I've never tried it, but does the WMO dilute in the diesel fuel, or will it settle to the bottom of the tank? I wonder if it makes a nice sludge on the bottom of the tank, like it does in the bottom of all my drain buckets?



Michael

 

[one_ton]

sludge

MMiller,



i dropped my tank about a month ago to see how nasty it was. there was no sludge, and this was after about 8K miles and about 30 gal. of oil. there was a lot of other crud in there. coat hanger, hot wheels car, GI Joe. and rocks.



what i do is put it in the tank, then add the diesel. this mixes it real good.



as for you fellers putting that in the dirt as weed killer. i would not make that public. the fines on that will put you in the poor house, and not to mention the clean up costs involved. i work with some hazmat at work, and deal with the EPA, they dont kid around. so for your sake, and your wallets, keep it your selfs.



Bob.

 

[BBowers]

the two, diesel and lube, dissolve into each other, like gas and 2 stroke oil mix. the problems that have cropped up in the marine industry from using used lube oil in the no. 2 diesel have been coking of injector tips, not to mention that vanadium and air at high combustion temperatures makes vanadium oxide which happens to be very corrosive to valves and pistions, causing pitting. This is all on continuous power applications where egts are around 800 degrees and more. MAybe our rigs don;t get hot enough to oxidize vanadium except towing heavy loads.

 

[Schlickenmeyer]

I can't imagine that Cummins would say ok up to 5% if it was going to be a problem. Perhaps higher concentrations could be an issue, but the allowed amount does not seem like much.

 

[WBissell]

Thanks for the info again!

This website is great! Thanks for the info!!

 

[HRDROKN]

the two, diesel and lube, dissolve into each other, like gas and 2 stroke oil mix. the problems that have cropped up in the marine industry from using used lube oil in the no. 2 diesel have been coking of injector tips, not to mention that vanadium and air at high combustion temperatures makes vanadium oxide which happens to be very corrosive to valves and pistions, causing pitting. This is all on continuous power applications where egts are around 800 degrees and more. MAybe our rigs don;t get hot enough to oxidize vanadium except towing heavy loads.

This is absolutely a problem... . we (Chevron Oronite Co. ) spend millions on developing additives to combat and reduce problems like BBowers describes above. I would suggest that regular doses (higher than recomended) of "TECHRON" be used in your fuel. I have seen this additive do some amazing clean up on piston rings, valves and injectors!!! OK sound like a plug for Chevron, but seriously... I worked for Shell Oil (15 years) and wouldn't touch their fuel. When I started working for Oronite and seen the data and the before/after photos and Techron works! We run some real crap fuel to test this additive. It will dissolve coking around the injectors while it is in the "soft carbon state". If it cooks for extended miles, then the results will not be as good... . my . 02

 

[JLEONARD]

Techron

I've never heard of this stuff, and obviously I've never seen it for sale anyplace around here.

Anybody else?

I'd try some if I could find it.

Jay

 

[Drewhenry]

coked injectors

The best way I know of to get rid of coked injectors is to run a can of BG44 injector cleaner in one tank of fuel. NO MORE PROBLEMS. Has worked well for me in the past.

 

[HRDROKN]

Techron

I've never heard of this stuff, and obviously I've never seen it for sale anyplace around here.

Anybody else?

I'd try some if I could find it.

Jay

Same additive that Chevron uses in their gasoline... we market an injector cleaner specifically for diesels, but the cleaner for gasoline engines will work just the same. It's all just marketing.



The byproducts of combustion are all sorts of nasty molecular deposits/changes... add more of the same in used motor oil and the problem can become huge. Not saying don't do it... just use a good additive package!



You should be able to find it at any auto parts chain and of course the Chevron station (or Texaco) should carry it.

 

[HRDROKN]

BG44 injector cleaner in one tank of fuel.

We probably sell them the additive for their injector cleaner! :-laf