OK, so lets get really crazy. I've burned ATF before, in my truck and my MB, that came from my Mercedes shop (for the older 5 cyl diesels). I have some outboard motor oil on hand (a few litres left over, don't have the boat anymore). Could I burn that mixed with Diesel ?
Any other oddball oils/fuels come to mind ?

 

Burning 2 stroke oil has been done before, myself included. I can't think of any reason why it would harm the engine. The mercedes 5 cyl is one of the most fuel friendly engines out there, you can burn just about anything in it. From experience, I was the most satisfied with ATF, because it also saved my IP which developed a stall on deceleration condition. I'm thinking of setting up a filtration system to clean out my used ATF and use that as my additive.

Veggie oil is also possible if you keep the content low (below 5%), but I would still prefer a bio compatible IP and fuel hoses before chancing it.

Heard of using used hydraulic fluid as well. I think the reasoning was that some are synthetic with properties that make it unsuitable for burning (fire retardant among others), with cheaper organic oils being more suitable, but don't quote me on that.

 

Thanks David,
durn it, I just gave away 4 gallons of new hydraulic oil I didn't need, nothing hydraulic at the moment. It was generic Canadian Tire, never checked for synthetic or not.
I'm going to put a gallon of 2-stroke boat oil in with about 3/4 tank of diesel and use it up. 'just have to keep the truck out of the water...LOL

 

That might be a little too much, I would put a liter per tank. 2 strike oil is designed to get past the rings of a 2 stroke engine and provide lube for the bearings, this implies that it can survive the combustion cycle. Now it gets a lot hotter in a diesel and the fuel delivery is different, but you still might run the risk of oil getting to the rings and MAYBE causing some coking. I can't be sure about any of this, but I would just play it safe and put less in per tank.

 

this is a bit off topic but i had to clarify , finally something i know about is 2 stroke engines. i work on them everyday and i also run TCW-3 2 stroke in my 6.9 about 8 ounces to the tank, works great. im not the expert on these IDI's but it sure as heck quites mine down and i think alot of it is the injectors. am i thinking right ? but heres the skinny on 2 strokes and the bearings inside the crankcase are lubricated before it gets to the piston

premixed 2 stroke engines pull fuel thru the crankcase. usually thru a set of plastic or medal reeds, sometimes a metal disc on the crank rotates and shuts off the intake to seal the crank case from expelling the fuel charge. this pre mixed fuel in turns lubricates the needle bearing on the crank as well as piston pin and the crank bearings. the piston upon firing is forced down being the exhaust part of the stroke and if you ever notice the cuts in a 2 stroke engines cylinder wall ( timing ) the exhaust is first then travels a bit farther down, the last of the expelling exhaust then in turns creates the pull for the fuel charge to travel into the intake port to the piston and starts all over. if this is a perfect motor none of the oil/gas mixture will get past the rings.

 

I stand corrected! I forgot there was a valve(s) to regulate crank case vapor.

I've also heard som say that ATF will quiet down an old IDI diesel. I've run 2 stroke oil and ATF and can't say I noticed much difference in noise level, but then I wasn't really paying attention.

 

Also don't forget, oil contains more BTU's per gallon than diesel does.
A gallon of oil to 10 or 12 gallons for fuel may raise the BTU content a bit to high, under hard acceleration the EGT's could get way out of control.

 

.....and higher viscosity.

 

Went to fill up today and the price for fule jumped up 10 cents over nightThis is getting out of hand and I'm about threw paying it instead I drove right past to checkers got an inline filter and some fule hose for an old pump I had laying around and pumped the five gallons of fule contaminated oil I had in the back of my truck in to my tank. Maybe I'll get lucky and the price will go down by the time I burn the 1/2 tank I have left. yeah right.

 

That is also one nice thing about the DB2 pumps. They have a way to offset the pump based on the viscosity of the the fuel used. to a point. I don't see 85-140wt working too well.

I'm gonna have to try this 2 stroke trick. What should I run for? 50:1, 80:1, 1.1Gigawatts?

 

I'll let you know how mine works out. I was outside yesterday after my post and didn't see the precautionary messages that followed. I put a gallon of 2-stroke oil in about 3/4 tank of diesel (I'll fill up soon to dilute it some more). I did a bit of local driving last night and did not notice any climbs on the EGT, funny noise or anything else, even when I stepped on it.
If I blow it up I'll admit it.....