it is likely that he has carbon build up on the cylinders and rings and it's not sealing good anymore

have him give water injection a try. has the effect of cleaning carbon off the cylinders, rings and valves. this may clear up his problem. if the deposits are bad it may take awhile to clean it all out but water is cheap so he could continue to use it with his WMO

now if physical engine damage has occurred then no amount of water will fix it. but it's worth a shot

it is also a good idea to get the engine good and hot once and awile. running on diesel bring the engine up to temp and do a few hard runs with it, free way on ramps, WOT runs, pulling a trailer, etc. heat can burn away some of the carbon deposits

 

Has anyone tried freezing the oil to get the water out? I removed alot of water from my waste oil this past winter by removing ice chunks with a strainer (super fine lint filter from a dryer). I'm not sure if this would get all of it out and it could only be done in the winter and places where it actually gets cold. The main problem is the stuff gets so blasted thick when it is that cold.

 

I would not view any WMO with that much water in it as a good candidate for something I would ever put in my fuel tank.

 

No matter what percentage oil you run the main thing to remember is to filter it to 2 microns and add some kind of additive in it. So far the Sea Foam i'm running has done it's job, but there's nothing wrong with a quart of Lucas injector cleaner once in a while either.

A couple weeks ago I ran 75 gallons of used hydraulic oil through it and it ran good, but didn't have the power used oil has........AND it smoked like hell!!! I have about 90 gallons of it left and will be gald when it's gone.

 

I would like to know how you measure 2 microns? Since it is a size which is not measureable physically...

Did you know that particles around 1 micron do the most damage to the pump and all componets behind it caused by an effect called the Avalanche effect...

 

Measuring nanoparticle size by photon correlation spectroscopy

not to stat a war here but if the tolerances are so tight then how do the particles get between them? and if the stock filters doesn't go down to less then 1 micron then we are all doomed from the beginning

 

Taken from the worlds biggest fuel filter company- Mahle:

These filters ensure nearly complete separation of particles up to 4 µm and consequently meet even the most stringent commercial vehicle requirements.

Until you can proof the opposite-and I don't talk about special race crap or centrifugal filters, which are effective to sizes smaller than the above mentioned size- I deleted your disrespectful post.

 

Look.......I'm not going to sit here and get stupid with you. if you want to become the World's filter expert and dispute everything everyone tells you then go HERE: Cim-Tek® Filtration: Petroleum and talk to them.

I DO know what micron filter I have and I DO know that if you go too fine on it you CAN filter out additives in a liquid. Fortunately for those of us wise enough bur used oil we couldn't care less about how fie we go on the filter because there are no "additives" in used oil that we care about.

So if you want to want to join the Naysayers Club (and you apparently already did!) and keep burning that $4.25-per-gallon stuff, go for it. Personally, I love screwing the oil companies all I can and getting an extra 1 mpg out of this $.50 a gallon stuff I burn!!!!

Cim-Tek DOES offer a 2 micron 9 inch-long filter and that's what I use, regardless of what YOU think.

 

"up to" or "down to"?

4 µm is 4 microns. but you state that 1 micron is the most damaging. so is there any fuel filters that filter out 1 micron particles?

not trying to poke holes in what you are saying its just that i have heard statements like this before and would like to figure out how this all adds up.

as far as i know no fuel filter will filter out 1 micron particles effectively so with all of these particles getting though then our trucks should be very short lived, right?

enlighten me please

 

I do not intend to be a filter expert-the rational thought tells me that using waste to save a couple of dimes compared with the costs of a highly skilled fabricated IP is- not very smart.

Down to 4 micron, of course!

Yes, there is one and only one proven method to remove particles partically down to 0.1 micron.
Centrifugal filters!
But due to their small flow rate and the pressure they need to work, they can only be used in engine bypass applications.
There are also some air pressure driven models on the market, but their use is not intended for use with fuel related products.

Any claim to filter down to 2 micron or less is a marketing gag. Sometimes they state to filter in 5 or 7 th pass.
Fuel is different - once its inside the IP the damage is done.

Fuel injected into the cylinder is as less as 4mm³- as a comparison: a raindrop is around 56mm³.
So take this really small amount of fuel as a measurement how small the internal parts are.
Damage is don- thats for sure.
I wouldn't buy a truck been fueled with waste motor oil.

The funny thing is that I live where the fuel price is double than yours- nobody would even try to burn waste engine oil- and at least every second car is actually a diesel.
There some freaks burning used veggie- thats it. The costs being caused for fine filtration and the work being involved is - sorry to say that- maybe possible for unemployed people.