Home Forums Hunting & Shooting Hunter's Campfire Used Motor Oil Added to Diesel Fuel

When I change the oil in my boats the hose on the oil change pump goes into the fuel tank. Got 28k hours on my JD 466 and took the valve cover off once to adjust the lifters. My 1992 IDI F250 has 430k miles and one tank is always full of used motor, transmission or hydraulic oil mixture. VEGETABLE OIL is a no go for me it gums up everything. My truck smokes a little more
when burning straight oil but not terrible. I drove it to VA bear hunting when POS obama had diesel at $5 a gallon. It was in the teens and my old truck didn't want to fire without a gas rag in the air cleaner.

Uh.....no.

I wouldn't do it.

If I won't use it in a crank case...I sure as hell am not going to use it in an injection system.

One of my friends bought a diesel Mercedes and ran it on oil from the fryers at his grocery stores. He owns the Stokes grocery stores so he had a decent supply of cooking oil. I asked him if he craved fried chicken when he drives.

Bb

I have about 350 gallons of used motor oil. I'm thinking I'm sitting on a gold mine.

I turned 70 this summer. The tractor I was asking about was built when I was 26.

I bought a new Ford 5600 back in 1976. It had 9000 hours on it when it burned up. Couldn't beat those model Fords.

There’s no way in hell I’d put used crankcase oil into my injection system. Common rail systems and electronic unit injectors are big money to fix. If I was worried about lubricity of low sulfur fuel I’d use a fuel additive. Used crank oil may have trace amounts of metal, antifreeze etc. Not going to put that back in.

And those old X600 series tractors really seem to hold up well. My 2600 still runs like a top.

New Holland bought Ford and the 2 big New Holland Hayfield tractors owned by 2 good friend have been a pain in the a$$. My 5600 just keeps chugging along. Had to put 2 water pumps on in the last 20 years and a new fuel tank. When I get this tank pretty well run out I'm going to change the fuel filter and take a look.

Never

Have not read all the replies but I was born into the farming industry and actually let's just say tripped into the excavation industry I'm in the excavation industry for all over 30 years. Putting no use motor oil and some diesel tanks just kind of old news. But I absolutely would not do this in anything newer than probably around in the mid-90s

Well....seeing how used engine oil is generally acidic, sometimes very acidic.......



You change that schit for a reason. Burn it in your stove.

I heat my shop with drain oil, dripped into a Franklin stove full of cast iron- - - -old brake rotors, cylinder heads, etc. Once the iron heats up, a tiny drip keeps the place comfortable even in very cold weather.

Very cold weather??


Tell us more......

Freezing temperatures. lololol

I heard that the Army did it in their big trucks. I did it a few time in my 82 Mercedes station wagon. Gas mileage was a little lower. Smoked a little more. One quart per 18 gallon tank full of new diesel. Didn't see the benefit.

This.

The best 2-cycle oils for the purpose (of lubricity in diesel engines) are the ones for your 2-cycle boat motor, that are TCW rated. They are ashless and burn very cleanly. I use it on my old K5 6.2 with the main objective of keeping the pump seals tight. Works great. At 20 plus dollars a gallon for TCW-rated oil, the savings from this are in equipment longevity, not miles per gallon.

I have "thinned" diesel fuel with hydraulic fluid, kerosene, and vegetable oil - always virgin, never reused - but figured out it was more trouble than it was worth after the filters clogged up prematurely and I had to pump out my tank (once) and change filters (prematurely more than once). I looked at waste oil, and leftover gas/oil mixture from my boat motors, but considered I could never get them clean enough without a substantial investment (filters, centrifuge, etc.) so would give it to a good ole boy with an old multi-fuel deuce and a half who loved the stuff.

All that said, no way would I run a modern diesel truck on waste oil of any kind. IMO too risky for such an investment. The old adage to equipment longevity applies: clean fuel, clean water, clean air, right?

My 6.2 is a 1984 and could probably run on pure 2-cycle oil if needed, so I don't get hyper-fussy about the ratios. That said, I use about an ounce per gallon, but not at every fill up, so Kentucky windage..... Since I'll sometimes add the 2-cycle oil at the pump location and don't want to take the time to pull the little measuring jug out and get all scientific, will deploy the highly refined "ear method" of a "glug" per every couple gallons...or so. LOL. YMMV.

Nope, commercial additives be OK

Everyone talking about doing this - doing it in old equipment, not modern.

Large trucking fleets run an average age of 3 years or so, mebbe a little more with the last 2 years.

No way are they doing this. Which would make me question/wonder why he told you they were. Which naturally would make me skeptical of other bits of information.