[HenryJ]

read rsr's note on the thick oil from the trucking compny and that was the same problem I ran into with the farm machinery oil.

On the extra thinning needed. What I did was leave the mix at W85 and start adding diesel to get the stuff thinner. Newbie here and like to stay on the safe side.

I am just curious in this case, does anyone up the percentage of RUG for necessary thinning?

 

[BTBBT]

I'm starting to find that out with the industrial, high temp safe hydraulic oil that I'm using also. I've run it up to about 14%RUG and it's smoking whiteish grey but I still don't have the stuff thin enough.

What I think I'm going to need to do is leave my mix at 10%RUG and start adding diesel to help it out. At least at these cooler temperatures.

 

[drmiller100]

If you are SURE it has no gear oil, and it is giving white smoke, then you can go up to 20 percent gasoline.

But add the gas when you have a way to put some diesel in if doesn't work.

20 percent probably won't hurt anything, but I am starting to think if you add too much RUG it will smoke some.

 

[rsr911]

This is one of the reasons I got a 275 gallon storage/settling tank. I get 50-100 gallons from the trucking company monthly and about 250-300 elsewhere. I let the tank get low then put one barrel of thick to 3 barrels of thin, this way my oil stays pretty consistent. My IDI doesn't seem to mind straight W85 made this way as the other thinner auto oil and ATF seem to thin it down enough. Last time I ran that stuff straight I think I went as high as W85 + 10% D2 but that was this past winter so the cold may have effected it.

I do know one thing, it sure pumps slower with my old gear pump. Going to possibly get a batch tomorrow with the new gas powered SBC setup, I'll have to see how that goes.

 

[dieseldonn]

I get a little smoke ever once and a while. I mix all my oil in one settling tank. Then pull off the top so i never know what the oil is that i'm getting. Like i said i get lite smoke from time to time.

 

[whitejohn]

ive just learned to be fine with some smoke coming out of my tail pipe as well. i also put all of my oil into a 275 gal container together so its a lottery what oil im getting

 

[dieseldonn]

Yep i think of it this way most diesels smoke. I have been a commercial truck driver for years and have seen my fair share of diesels that smoke. So it's something i can live with for the cost savings. Besides my truck has 330,000 miles on it. It's going to smoke a little right.

 

[EMD_Driver]

So it's something i can live with for the cost savings.

You can also look at it this way... You are also recycling!

Besides my truck has 330,000 miles on it. It's going to smoke a little right.

Mine just turned 301,000 miles..... It smokes too!

 

[BTBBT]

I added about 16%RUG with my last batch to try and thin it up to get closer to what D2 is like. My truck started smoking white all the time. It was bad. I finally got it down to about 3/8 of a tank and added 4gal of D2. The smoke diminished a little but never went away. My last batch I made at the 10%RUG I did when I started and got almost no smoke. But I'm still smoking. It's white, and a little grey when I push hard. I'm not wanting to blame the WMO(hydraulic oil) that I'm running and am looking into it. But I'm starting to get a little nervous.

 

[kerrynzl]

I added about 16%RUG with my last batch to try and thin it up to get closer to what D2 is like. My truck started smoking white all the time. It was bad. I finally got it down to about 3/8 of a tank and added 4gal of D2. The smoke diminished a little but never went away. My last batch I made at the 10%RUG I did when I started and got almost no smoke. But I'm still smoking. It's white, and a little grey when I push hard. I'm not wanting to blame the WMO(hydraulic oil) that I'm running and am looking into it. But I'm starting to get a little nervous.

Try putting a hotter thermostat in your engine instead of upping the gasoline percentages [ which costs hard earned $$$ ]
The problem with too much gas is the auto-ignition temperatures of gasoline are higher than oil [ try 100% gasoline and it won't run at all ]
The best fuel is No2 diesel with a density of 0.832kg / liter and a low auto-ignition temp of 210c
Gasoline has a density of 0.737kg / liter which is great for blending to lower the density [ thinning ] but unfortunately has an auto-ignition temp of 280c, so if you see white smoke and you add more gas you're actually making it worse.
Lowering the density of the fuel is needed to give the filters and the injector tips a fighting chance at flowing, it has nothing to do with combustion [ that is temperature related ]
Most lube oils have an auto-ignition temp of approx 250c so the best way to lower the density is to heat the oil, unfortunately gasoline is highly volatile and vaporises when heated so it is advisable not to heat gasoline blends [ the flash point of gasoline is -43c ] ,the engine will run ok [ better than ok! ] but you'll be wasting the money spent on gasoline because it evaporates in the tank from the heat in the return line

When I rebuilt the engine in my vehicle, I had WMO planned for it's usage . I decked the block to raise the compression to 22.5: 1 [ up from 21:1 ] this increases the cylinder temperature at TDC.
Having higher static compression ratios help eliminate smoking at idle speeds [ Unfortunately most diesel engines are only 17:1 to 18:1]
I also turned up the turbo boost up a bit to get more air at highway speeds, but had to be conservative here because of the static compression being upped.
Because my engine is packing more air into smaller chambers it produces more heat so I didn't need to touch the thermostat . I only have white smoke on cold starting for about 30 secs in the morning ,when the engine is warm it doesn't smoke at idle at all.

Lately I scored 10 drums of Dextron III ATF ,a 90 / 10 blend of ATF / Gasoline has a density of 0.841kg / liter which is just over 1% higher than D2 [ 0.832kg / liter ] but Dextron III has a flash point of 180c [ some ATF's are as high as 210c ] so it struggles to ignite when cold. and runs beautifully when warm.
The flash point is the lowest temperature that it will ignite at ,do not confused this with auto-ignition temperature, usually fuels with low flash points are highly volatile [ the ability to vaporise ]
I have experimented with a heat exchanger, and the engine runs the best ever [ even on gearbox and hydraulic oils ] ,
A ships No6 bunker oil has an auto-ignition temp of 400c.which is way higher than gasoline, and it is clean [ish] burning when it is heated .

So maybe heating the oil really is the answer [ the shipping industry already know this ]