Mixing used oil with diesel in the tractor.

[RalphVa]

Kubota B2601

Diesel consumption should be around 1/4 gallon per hour.

We went to $6.40 a gallon today

$6.40 / 4 = $1.60 per hour for diesel.

I've been posting about my less than 0.4 gph fuel consumption on the B2601 and been getting flack. Now, you post 0.25 gph. Even my little 12.5 kw Isuzu has not been this low.

 

[RalphVa]

Apart from the possible dirt in used oil, I'd be concerned about formation of carbon from the too-heavy fuel. MUCH higher boiling point is the used oil.

I did it in my oil fired furnace years ago, but it was a very simple one and got cleaned once/year (of the added soot that would be from burning the used oil).

 

[Shenandoah MF1760]

Never an issue with Seafoam keeping things clean.

Seafoam original use is for diesel. It keeps the injectors and pump clean. I use it with regular diesel and bio-diesel mixes. Works ever time.

No matter how good a product it will not prevent contamination from getting to the injectors or pump.

And most filters are rated at a nominal percentage. An example being “95% of 10 micron” – where the filter prevents 95% of all 10 micron and larger particles from passing through. Or a 20:1 success rate of filtering at 10 micron.

An absolute filter - much harder to find and more expensive, will filter to the specified number of microns.

Basically most filters aren't as good as you think they are. And the far cheaper filter could be a 50% nominal if you read the fine print.

It boils down to cost vs benefit. If your fuel savings are greater than the time spent dealing with waste oil + repair costs + down/shop time. Then that's a win. Otherwise...

 

[5030]

Apart from the possible dirt in used oil, I'd be concerned about formation of carbon from the too-heavy fuel. MUCH higher boiling point is the used oil.

I did it in my oil fired furnace years ago, but it was a very simple one and got cleaned once/year (of the added soot that would be from burning the used oil).

Different process of combustion as in no compression ignition. Anytime you spray the mixture and ignite it, you'll get carbon no matter what. I get that in my diesel fired pressure washer running just diesel. I have to clean the orifice and the ignotor regularly.

With compression ignition (diesel engine), the fuel is injected at the peak of compression heat so it's consumed much more completely.

I'd never run straight drain oil anyway. I mix in a couple gallons of oil with every fuel loaded into the tanks and my tractors hold over 30 gallons each. Considering what ORD costs today, every little bit helps and no worries about disposing of the used oil either.

Like I stated in a previous post, just filled my bulk tank half full and it was north of 2300 bucks.

 

[ruffdog]

With the cost of my injectors at $1000 each and fuel filter at $100, it sure would not be worth the risk and hassle.

 

[5030]

With the cost of my injectors at $1000 each and fuel filter at $100, it sure would not be worth the risk and hassle.

Gold plated or what?

 

[bmaverick]

No matter how good a product it will not prevent contamination from getting to the injectors or pump.

And most filters are rated at a nominal percentage. An example being “95% of 10 micron” – where the filter prevents 95% of all 10 micron and larger particles from passing through. Or a 20:1 success rate of filtering at 10 micron.

An absolute filter - much harder to find and more expensive, will filter to the specified number of microns.

Basically most filters aren't as good as you think they are. And the far cheaper filter could be a 50% nominal if you read the fine print.

It boils down to cost vs benefit. If your fuel savings are greater than the time spent dealing with waste oil + repair costs + down/shop time. Then that's a win. Otherwise...

Well, we better stop running with diesel too with those stats. Diesel itself becomes contaminated and dirty overtime due to the bacterial sludge that can build up. That's worse than the bio-fuels being added in. You might as well park your machine and not even dare use it then.

 

[bmaverick]

With the cost of my injectors at $1000 each and fuel filter at $100, it sure would not be worth the risk and hassle.

WOW, I've never heard of $1K priced injectors. INSANE. You better carry good insurance on that machine.

 

[ruffdog]

WOW, I've never heard of $1K priced injectors. INSANE. You better carry good insurance on that machine.

Yeah....it's called good clean fuel and factory filter insurance. If you want to play, you have to pay.

 

[Raul-02]

Anyone mixing used oil in with their diesel to cut the cost?

Running the stuff you wanted to get out of your engine back through it? Not in a modern diesel. It'd change the injection rate and viscosity of the injected fuel, impact the compression, god knows what else.
For an older engine, you might be able to get away with it.
There is even a "system" for it Simple System Turns Waste Oil Into Diesel Fuel