we'll i decided to run some wmo. currently im in the process of collecting a usable amount (out here in the northeast lot's of people heat their garages with it)
this is what im planning.. i have two 55gal drums with petcocks brazed in the bottom. when i finish filling the first drum i will let it sit for about two weeks (like a fine wine) this will cause the oil to layer it self. water, antifreaze ect. also some of the silt will begin to fall to the bottom. then i will drain the bottom off the tank untill just oil flows. then pump of the top. as far as filtering i bought a hydraulic filter setup and a vane type pump. im running a 10 mic filter but thinking of trying to find a finer one. the reason for two barrels is once the one has set you don't want to pour in any new oil and stir up the layers. while im drinking of the one im filling the other... or atleast that's the plan.
im just going to run 5-10% at first to see how she runs then i will slowly up the mixture 50/50 maybe
i have read quite a bit and am confident that as long as its clean should have no problem.

question... why does cummins say we can run small percentages of wmo in our truck? im doing it purely for supplemental reasons, less diesel i have to buy! but is their a benefit to running it in small amounts?

 

Cummins approves 5%. EPA approves 7%. I'm running 20%, and some guys are running up to 80 - 90% or more.

Sounds like a good plan to let it settle. I do something similar. I have a couple 3 gallon black oil recycling cans (plastic) that I got at Walmart. I collect my oil in these. I also have a 20 gallon steel drum with a spigot on top. I fill it with oil I've collected in the plastic cans after they've been sitting in the sun all day (to thin out), filtering it through an old rag or t-shirt while I'm filling it, just to keep the chunks out. Also, I put a big welding magnet in the funnel to catch any metal particles. I rinse the cans with Kerosene and run that through the funnel/magnet/rag into the drum, too. After I've filled it 1/2 way or more, I tip the drum over at an angle and let it settle for a few more days in the sun. I then drain it out of the drum into a 5 gallon gas can, filtering it through a Mr. Funnel fuel filter funnel to get any water and sludge out. Then it goes into the fuel tank and I top off with 1/2 bottle of Diesel Kleen and fresh diesel.

No problems so far, but I am adding a 2 micron fuel filter to the truck, soon.

 

Because they have only tested the commonly available B5 and B10 blends.
The reason they don't certify the B100 is because there are no ASTM standards at the present like there is for #2. There is a wide variance between 'commercially' produced BioDiesel and homemade WVO. They don't want to warrantee their pumps for something that doesn't have a standard they can test to.
Can you blame them?
Also, our trucks are a lot more forgiving in the quality than the newer trucks. Something about the injectors and pumps - not sure exactly what.

 

Just to clarify, the original poster is talking about WMO (Waste Motor Oil), not WVO (Waste Vegetable Oil) or Biodiesel...

 

I am running 50% wmo and 50% #2about ten tanks so far and no trouble. I just fill a 20 gallon drum half was with wmo then the rest with #2. Then I pump it through a 10 micron filter and into the truck. The one thing I am not sure of is how the cold will affect the truck. I have never plugged the truck in since I have owned it but I am thinking I might have to now. It does not get very cold here like someplaces but I have never had a minutes trouble starting it in the cold before wmo.

 

Some are using 1 micron bag filters and passing the oil through it several times before pouring into the tank.

MikeyB

 

Biodiesel does have an ASTM standard to adhere to. Lookit here:

http://www.astm.org/cgi-bin/SoftCart...AGES/D6751.htm

 

Bradshaw, you have a 1st Gen, relax and sleep well at night, the WMO will work wonderfully in your rig. Although, if I were you, I would not yet be running it if you only filter it to 10 microns. Honestly, that's not enough. Filter it down to 2 micron or smaller, it cost the same money and you get MUCH better protection for your engine.

 

Bradshaw,

You are being very careful and should have no trouble at all.

I have run up to 100% WMO in my 1st gen and various percentages in my Mercedes and they ran just fine. The only concern I have, and it's just my own thing, is getting hardened gear face material sludge into your injecton system. The finer the filter the better.

I was pretty casual with mine and just let the stock filter handle it after settling the oil as you are doing, but I am being more careful with my 3rd gen.

There is no better place to put old motor oil than in a fuel tank and many people are and have done it for years.

 

I managed a truck diesel shop in FL. for 10yrs. early 90s had to start paying to take old WMO away, tried to pass it on to trucking company, we talked over decided to blend 10% filtered oil and pump it right back into tank! ran for three yrs no troubles, 7 trucks. saved a lot of money! Thx Ron