waste oil
Cargo Master
Joined: Mar 2006
Posts: 2,789
Likes: 5
From: Sand GAp, KY
I am with Dave on this one guys. I have looked into alterative fuels and wmo is about the worst there is for your engine (mixing wvo with diesel will kill your engine faster). There is no cheap way to filter out all the junk in it and I don't mean the metal pieces. That stuff has alot of bad in it from the combustion process and it is not good for your engine. If you don't believe me go to the bio diesel and alternative fuels forum and ask the guys there, they really know their stuff and they can give you alot more info. Peterbilt376x, good IDI's are getting harder to find so instead of destroying one on the chance of saving a little money why not sell it and get something easier on fuel. I could understand doing this with a GM or Dodge lol. Just kidding guys.
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Senior User
Joined: Feb 2009
Posts: 157
Likes: 0
From: Duanesburg, NY
thats true dave i never thought of it that way.....i may run it mixedlike 50/50 or 60/40 id still be saving money....i am happy how much smoother that the truck is running though.....and ken..yea i did have an old 6.5 and id a done it with that no prob it was a piece of SH** anyways lol.....and i do love my truck...and mixing it a little i dont think would do too much....like i said its running alot better now
Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 15
From: Nutter Fort, WV
This is a bit like the "If a little is good, a lot should be great" line of thought.
I have a bunch of waste motor oil and I give it some thought about filtering it several times and dumping a couple gallons in with a full tank of fuel.
But then I think about the metal contamination, all that soot suspended in the oil and the possibility that a little water contamination could form sulphuric acid when it mixes with the sulphide's in the oil.
With the ULSD I guess the sulphide's are at much lower levels than they used to be though.
Still that is a lot of junk to run through the injection system.
Those trace metals will probably wind up baked onto the injector nozzles from the temps in the cylinder when they fire.
So far the waste oil is still sitting there.
I have a bunch of waste motor oil and I give it some thought about filtering it several times and dumping a couple gallons in with a full tank of fuel.
But then I think about the metal contamination, all that soot suspended in the oil and the possibility that a little water contamination could form sulphuric acid when it mixes with the sulphide's in the oil.
With the ULSD I guess the sulphide's are at much lower levels than they used to be though.
Still that is a lot of junk to run through the injection system.
Those trace metals will probably wind up baked onto the injector nozzles from the temps in the cylinder when they fire.
So far the waste oil is still sitting there.
Posting Guru
Joined: Aug 2006
Posts: 1,049
Likes: 0
From: Perry Georgia
I totally agree with you about filtering used motor oil. I run a centrifuge and tried to adding a couple of gallons of used motor oil to 40 gallons of WVO. I could never get the UMO to clean up enough to add to my fuel. I just trashed the whole batch and set it aside till I figure out what to do with it. I ran it about 10 hours a day for about 3 weeks and it still was having residue left in the centrifuge after i shut it down for the day. The centrifuge removes trash down to .5 microns.
Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 15
From: Nutter Fort, WV
Well we have already been down in the low 40's a couple mornings and every morning is right around 50 now, so SVO or WVO will never go in my truck.
Just gets to cold at night here and 70% of the time my trips are short enough that I would be there before the tank was hot enough to run on.
And I still think the cross contamination when you switch fuel tanks would cause me big problems at sub zero temps.
Just gets to cold at night here and 70% of the time my trips are short enough that I would be there before the tank was hot enough to run on.
And I still think the cross contamination when you switch fuel tanks would cause me big problems at sub zero temps.
Posting Guru
Joined: Aug 2006
Posts: 1,049
Likes: 0
From: Perry Georgia
I know of one guy that pours WVO straight into the Diesel tank BUT only in the heat of the summer. Even in the heat of the summer it sounds to chancy. I've seen it turn cool in the middle of the summer. This is about 75 miles south of Cleveland. I have mixed WVO and Diesel in a small glass jar and shook it up for awhile and it stayed suspended but there isn'r any way to shake up a whole fuel tank full.
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Junior User
Joined: Jul 2007
Posts: 70
Likes: 0
From: NW Ohio
I've been running WMO for over 2 yrs now, and yes I agree with Dave that it will wear out parts faster, but I have yet to kill an IP. Mine is getting weak but it has close to 100K on it now, about half of that messing with alternative fuels. I've went through several glowplugs and lots of fuel filters but I've found that the problem isnt the filter getting plugged with junk that in in the oil, its water contamination that kills the stock filters. I've had good luck running fuel filters off of medium duty Ford 6.6 and 7.8.
Its a learning curve and if you do it wrong its gonna cost you a lot of money, once you get it right it will save you money.
As of now I have a tank heater, Holley blue lift pump, high flow filter, larger diameter lines and I still have a few more things to do to get it perfect but it works good enough to tow with.
As far as the cross contamination between tanks, it wont cause a problem until under 1/4 tank, keep you clean tank above that and it will start fine.
Its a learning curve and if you do it wrong its gonna cost you a lot of money, once you get it right it will save you money.
As of now I have a tank heater, Holley blue lift pump, high flow filter, larger diameter lines and I still have a few more things to do to get it perfect but it works good enough to tow with.
As far as the cross contamination between tanks, it wont cause a problem until under 1/4 tank, keep you clean tank above that and it will start fine.
Posting Guru
Joined: Aug 2006
Posts: 1,049
Likes: 0
From: Perry Georgia
I have used maybe 1 gallon WMO and that was all. After I tried cleaning it thru the centrifuge and had such terrible luck I just started taking it to the auto parts store and letting them have it. If somebody wants it I'll give it to them. Are you running WVO or WMO?
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Senior User
Joined: Feb 2009
Posts: 157
Likes: 0
From: Duanesburg, NY
yea with my wmo my water in fuel light came on after i added it but the sensor is mesed up because wen i changed it 5 months ago it came on as soon as i changed it, then i unpluged it for about 2 months then pluged it back in and it was off, but i havent had a problem with it yet
Posting Guru
Joined: Aug 2006
Posts: 1,049
Likes: 0
From: Perry Georgia
I think Dave S listed a filter that had a water drain in it. I forget right now which one it was. Maybe he'll tell us again. I wanted to get one but forgot the number. The po bypassed the water collector on my truck.
Junior User
Joined: May 2008
Posts: 65
Likes: 0
do you guys think a radiator with the tranny cooler woudl work for heating wmo/wvo? i have the auto rad with a man tranny and i was thinking of running a dual tank system because i can get an endless supply of 20 or more gallons of wvo a week. at least it might be a good preheater i would think
Junior User
Joined: Jul 2007
Posts: 70
Likes: 0
From: NW Ohio
A water seperator is about useless when running WMO, the oil will hold the water in suspension untill its heated. I run any waste oil, if I get a little veggie oil I mix it in with everything else.
Like previously stated just dont use the "if a little is good a lot must be better" thought unless you have set the truck up to run that way. I've changed timing and fuel pressure more times than I care to count, but if I mix it 50/50 no changes are needed.
Yes some people use the "cooler" as a preheater before going to the filter head, I can tell you that in the summer that cooler will maintain about 190 degreese for the trans.
Like previously stated just dont use the "if a little is good a lot must be better" thought unless you have set the truck up to run that way. I've changed timing and fuel pressure more times than I care to count, but if I mix it 50/50 no changes are needed.
Yes some people use the "cooler" as a preheater before going to the filter head, I can tell you that in the summer that cooler will maintain about 190 degreese for the trans.