[ctscasemod]

Hi all,

I have a persistent question regarding wmo and would like some thoughts.

I have a seat Ibiza runing wmo. The old model, European 1900D non Turbo 10.000Km on wmo and counting.

At first I had a lot of problems regarding filters, i once broke up an injection pump, blocked filters all the time, etc.

I've then bought some one micron filter bags and since then no more big problems, stock filter already make about 3500Km.

The strange thing: I run wmo at a concentration of 66 to 33 diesel. The car works well, but each time I add nmore diesel the car starts smoking like crazy! What could this be the problem? Seems to smoke more with a high diesel and low oil concentration that with a high oil and low diesel mix. Could this be that the diesel fires first and the oil in last, not burning ok and with more oil the oil burns more even?

Last few days I start running 100% WMO. Engine starts just fine, runs Ok since I don't pull for it, If I step the accelerator or pass the 80-90kph it starts loosing power, seems like the pump doesent pull the oil, because it's to viscous.

The big problem: Lots of carbon: I have to clean the injectors once about 500Km if only on oil or about 2000-3000Km on a 60% mix otherwise it will stop starting because of the carbon. More, the glow plugs just go bad and burn all the time. I now only turn them on to start the car and then shut them off to avoid them to burn.

Is there any way to remove all this carbon junk? I've heard of steam as a way of cleaning up this, does anyone have an idea?
:shock:

 

[rufushusky]

Do you centrifuge or clean the oil in anyway? Used motor oil has a boat load of crap in it that was never designed to be burned in large quantities.

 

[kstinson]

Do you centrifuge or clean the oil in anyway? Used motor oil has a boat load of crap in it that was never designed to be burned in large quantities.

Even if you centrifuge motor oil, used or not its still not considered acceptable for a diesel engine. The biggest problem is most motors oils are not ashless oils. They are low ash. When used as an engine lubricant low ash oils are fine and do what they are intended to do. However when used as a fuel they can cause a lot of problems.

 

[ctscasemod]

Do you centrifuge or clean the oil in anyway? Used motor oil has a boat load of crap in it that was never designed to be burned in large quantities.

Yes it is filtered twice to one micron using filters. I do about 5-15liters each time and the centrifuge doesn't work well, so I just started using some filter bags.

The worst problem with my centrifuge is that it blocks all the time when starting and I need to sped large ammounts of electricity getting the oil at least 55 Degrees, otherwise it will not flow easily. Second problem: Some particles that aren't a big problem when the oil is hot are a little problematic when the oil get's cold and block the filter. With the setup I have now the oil passes the filter at the same temperature (in worst case) it will past the engine filter so I never got a clogged filter again and its been more than 3000Km since I use this setup with the same filter.

I do have a heater: Electric when the engine is cold and uses the coolant when the engine is hot, so it always gets warm oil. The problem seems to be the carbon deposits, I can't get rid of them for much time.

 

[patracy]

Even if you centrifuge motor oil, used or not its still not considered acceptable for a diesel engine. The biggest problem is most motors oils are not ashless oils. They are low ash. When used as an engine lubricant low ash oils are fine and do what they are intended to do. However when used as a fuel they can cause a lot of problems.

You do realize that cummins stated on the older P-pumped trucks you can run up to 5% volumes of WMO in your fuel. Many OTR semis burn their waste oil and have intergrated systems to automatically mix it.

 

[rufushusky]

Yes it is filtered twice to one micron using filters. I do about 5-15liters each time and the centrifuge doesn't work well, so I just started using some filter bags.

The worst problem with my centrifuge is that it blocks all the time when starting and I need to sped large ammounts of electricity getting the oil at least 55 Degrees, otherwise it will not flow easily. Second problem: Some particles that aren't a big problem when the oil is hot are a little problematic when the oil get's cold and block the filter. With the setup I have now the oil passes the filter at the same temperature (in worst case) it will past the engine filter so I never got a clogged filter again and its been more than 3000Km since I use this setup with the same filter.

I do have a heater: Electric when the engine is cold and uses the coolant when the engine is hot, so it always gets warm oil. The problem seems to be the carbon deposits, I can't get rid of them for much time.

Did you have pre-filter for the centrifuge? What do you use for a heater? Is that 55 degrees Celsius or F?

 

[ctscasemod]

Did you have pre-filter for the centrifuge? What do you use for a heater? Is that 55 degrees Celsius or F?

No, but even if I had it was alot of trouble. High preasure tubes that could blow up and get oil all over the place, the need for a high preasure hidraulic pump, noise (from the centrifuge), fire risk, and the electricity needed, in particular to get the oil hot. 55 Degrees Celcium, althought best results were obtained at about 70 Degrees Celcium.

For the heater a 2000W Electric heater inside the oil. I saw some guys using propane or even solar sistems but i don't have space for them. Besides, I don't think the centrifuge could filter particles much smaller that the filter. They only state to about or less that one micron at full speed.

Any thoughts?

 

[Desert Dually]

uhhhhh.....

Even if you centrifuge motor oil, used or not its still not considered acceptable for a diesel engine.

:doh: :hehe: how wrong you are!:buttkick: you havent been "into" diesels for long, have ya?:lol4:
You might want to do some more reading/research before chiming in on stuff you arent exactly sure on :thumbsup: