So I will be in a pretty warm climate this summer in Texas working for Cargill Beef and was wondering how the 6.5 likes blended (filtered) waste veggy oil in the tank along with diesel? Will I need a stronger lift pump? What problems would arise from doing this? Im just seeing if there is any way to save a buck with these fuel prices. "Supposedly" there is a guy here in Mankato that runs Waste Engine Oil and pours in directly into his fuel tank:eek:. Is that even possible???

So I will be in a pretty warm climate this summer in Texas working for Cargill Beef and was wondering how the 6.5 likes blended (filtered) waste veggy oil in the tank along with diesel? Will I need a stronger lift pump? What problems would arise from doing this? Im just seeing if there is any way to save a buck with these fuel prices. "Supposedly" there is a guy here in Mankato that runs Waste Engine Oil and pours in directly into his fuel tank:eek:. Is that even possible???
Been doing this for 15+ years,(mostly in a 855 Cummins) never a problem, except an occasional plugged filter if it is too cold.

alright well all I needed was some more proof. You filter it or anything before putting it in your tank? Have you tried it with your d-max?

Google WVO Lots of info,,, mostly filter down to 5 micron, dry it if needed,, and blend it in to many ratio's with regular diesel, Change fuel filter after 2nd tank and then again at 6 months.

alright well all I needed was some more proof. You filter it or anything before putting it in your tank? Have you tried it with your d-max?
Yes, I do it all the time in my Dmaxes, every oil change including the tranny oil change. I don't filter it if it is my own because I know where it came from, but if it came from someone else I would. If you have the right fuel filter in place you should never get anything in the fuel system that will hurt it. I use a FASS fuel filter/pump which helps a lot by extra filtering and pushing it through.
On edit, Veggie oil tends to plug filters worse, I have better luck with eng and trans oil.

Well, I guess I will be talking to some of the local farmers and grain trucks around here to see if I can get some. Thanks a bunch for the info. Well for us 6.5ers.....will our stock filtering system and lift pump hold up to dealing with used motor oil?

Well, I guess I will be talking to some of the local farmers and grain trucks around here to see if I can get some. Thanks a bunch for the info. Well for us 6.5ers.....will our stock filtering system and lift pump hold up to dealing with used motor oil?

I'd beef up lift pump and its power supply, for any fuel blend with more viscosity. I did this to run biodiesel. The OPS which supplies power to the lift pump when the engine is running (and cuts power when the engine is off, for safety) is a weak part electrically and can go intermittent & burn out - especially with biodiesel, WVO blends or oil blend which can be more viscous, causing the lift pump to work harder and draw more juice. Use a relay or control harness to power the lift pump safely. I'd upgrade the lift pump to at least a heavy duty version of the factory 'shaker' pump. (Heath Diesel says they have one of these) A beefier lift pump is better but more $$. I went this route; see sig. I'd also add a secondary fuel filter at the lift pump just to be sure.

Waste oil or trans is bad, ever pull an oil sample and send it to a lab, used oil/trans, has high metals-soot-silica-acidic-water or any number of bad things, think of it if it isn't useful as a tranny lube or crankcase lube, (we change it because it's getting past it's time) why then would you put said fluid with all potential contaminants into fuel system that is supposed to be lubricated by fuel, bad practice,

yes grandpa or dad did it, and it didn't harm their engines from appearances of things I doubt critical review of what harm they possibly did was ever evaluated, like Spicer study here of lubricating properties of additives, if "storebought" clean/new additives fail test how do you think waste oil fares, grandpa & dad also didn't have a intelligent fuel system back in the day, high psi injection, or low lubricity fuel.

Bio-D & properly prepared WVO in limited quantity is wholly different than fluids removed for high time on them, I would not do it on mine, take it to a reclaimer so it can be properly recycled, use as fuel addidtve would not be my choice.

Waste oil or trans is bad, ever pull an oil sample and send it to a lab, used oil/trans, has high metals-soot-silica-acidic-water or any number of bad things, think of it if it isn't useful as a tranny lube or crankcase lube, (we change it because it's getting past it's time) why then would you put said fluid with all potential contaminants into fuel system that is supposed to be lubricated by fuel, bad practice,

yes grandpa or dad did it, and it didn't harm their engines from appearances of things I doubt critical review of what harm they possibly did was ever evaluated, like Spicer study here of lubricating properties of additives, if "storebought" clean/new additives fail test how do you think waste oil fares, grandpa & dad also didn't have a intelligent fuel system back in the day, high psi injection, or low lubricity fuel.

Bio-D & properly prepared WVO in limited quantity is wholly different than fluids removed for high time on them, I would not do it on mine, take it to a reclaimer so it can be properly recycled, use as fuel addidtve would not be my choice.
I'm not trying to stir anything up here, but how can you say that when you have never tried it? I have been doing this steady for exactly 19.5 years now, the list of equipment includes, John Deere, Caterpillar, Cummins, Mack, Duramax, Powerstroke, International, and probably more. There has never been one instance of trouble with pumps or injectors from this practice, in fact it has been noted that I seem to have less than the normal. What can I say? Maybe I just do good maintenence otherwise? I agree with your concern over the wear contaminants in used oil, that is why I am a sticker for good filters.(now I am going to be centrifuging it too) But when all reasoning is put aside, I can't argue with the record so far.

I'm starting to run it in my D-Max. I'm using a fuel filter and a 10 micron filter. I plan to run between 25% and 50%. I have talked with others that are/have been running it for quite a while with no issues.
I hate to say it but with diesel at $4 we have to try something cause at $120 a fill up it is way too expensive. Some of us like me have days when we fill up 2 or 3 times :mad: :eek:.

Waste oil or trans is bad, ever pull an oil sample and send it to a lab, used oil/trans, has high metals-soot-silica-acidic-water or any number of bad things, think of it if it isn't useful as a tranny lube or crankcase lube, (we change it because it's getting past it's time) why then would you put said fluid with all potential contaminants into fuel system that is supposed to be lubricated by fuel, bad practice,

yes grandpa or dad did it, and it didn't harm their engines from appearances of things I doubt critical review of what harm they possibly did was ever evaluated, like Spicer study here of lubricating properties of additives, if "storebought" clean/new additives fail test how do you think waste oil fares, grandpa & dad also didn't have a intelligent fuel system back in the day, high psi injection, or low lubricity fuel.

Bio-D & properly prepared WVO in limited quantity is wholly different than fluids removed for high time on them, I would not do it on mine, take it to a reclaimer so it can be properly recycled, use as fuel addidtve would not be my choice.

XX2 I agree,
the duramax motors have a 26,000 PSI rail pressiure, I have seen duramax motors that have run straight WVO, blends and incomplet biodiesel fuels and they all had the same thing wrong with them, Its my understanding that the glycern when pumped up to 26000 PSI will crystalize into globs of marble sized snot globules and thease collect inside of the cylinder.

the old mercedes and older style diesel motors run around 500 PSI rail pressiure, thats why they work with the WVO.

I dont know how greasecar is doing it with WVO, I guess if it was messing things up, we would be reading about it.

So who know, good luck with it.

Rick