Waste cooking oil in a P-Pump??

Just filtered a gallon of wvo down to 1 micron, and it is still dark and burnt looking. Is that ok?

There's no food or anything else in it, just the color isn't as clear as it was new. Only asking because I don't know how clear it is when people get it from mcdonalds and where ever else.
 
Snake said:
PowerService will make the WVO polymerize faster and I would not recommend adding it. The best thing to keep WVO from becoming Crisco is heat.

Toolman -- any idea how much coking you had? Or how much seeped into the crankcase oil when the engine was cold?

As I said, you can mix WVO with diesel or run it straight without a second tank, heating, or filtering and it WILL work............for a while. :bang

--Snake
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I have no idea if any got in the oil I didn't do an oil analysis on it. all I can say is I ran about 600 gal through it in the warm weather and didn't notice any problems. I am running #2 in it now since it got cold and it still is running fine and i still haven't changed the fuel filter.
I have friends that have been running it this way in VW's for years with out a problem.
 
#2 is regular highway diesel right? why would you switch to that because it's cold? Or you mean it's better than wvo in the cold?
 
Unless you heat WVO, which I hope anyone running WVO does, you will have issues with viscosity and gelling in colder temps. In that situation D2 is a must.
When I ran WVO in my Mercedes, in addition to the fuel line heater, I had a heating element in the WVO tank. The WVO in the tank was at least 100F and the fuel heater raised it to around 180F just before reaching the IP. I ran both heaters all the time regardless of outside temperature to improve viscosity and reduce any stress on the IP. It was also a two tank system so it would never start or shut down on WVO.
 
In addition to potential viscosity problems, cold WVO presents other issues even in warm weather.

Cold WVO does not burn efficiently. When relatively cold WVO is injected into your cylinders, it will smoke slightly. Over time, this leads to carbon buildup on valves and rings (coking). Once it builds up enough on your rings, the rings won't fully seat and you'll start getting WVO into your crankcase. FYI, WVO + motor oil = milkshake. When enough builds up on your valves, they won't fully seat either and something is going to break.

The quality WVO conversions (and experts on the subject) will tell you that you should always start and shut down your vehicle on diesel. When the engine is cold, its normal for a small amount of fuel to pass the rings and enter your crankcase. Diesel motor oil has an additive in it to counteract minor amounts of diesel that may contaminate your oil. But if you're starting with WVO (even a blend), this is also seeping into your crankcase and your motor oil has absolutely nothing in it to counteract WVO.

I'm far from being a guru on the subject, but I have logged over 30k miles on WVO and continue to do a lot of research....
 
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I'm with Snake on this thread. Anyone can do a quick search on the forums (even the Mercedes and VW diesel forums) and see pictures and threads of engine, injector, and pump damage from WVO. In most cases, the WVO was not heated and/or filtered/dewatered properly. So no, VW and Mercedes guys don't run WVO without problems.

Do not go and throw WVO in your tank and expect everything to be ok. It will shorten the life of the engine.
 
madmikeismad said:
milkshake, got it. So why is wmo worse than wvo?
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WMO will carbon the injector nozzles very bad unless it's preheated, other than that the 12v will burn it fine, filter it good and run it, clean your nozzles once in a while.

Snake, maybe you should try burning some... LOL
 
Don't most of these trucks (Dodges) run an oxidizing catalyst, a device somewhat similar to a catalytic converter found on gassers?
I'd imagine running anything but diesel in these trucks would certainly risk damaging it, perhaps prematurely clogging them up.
 
my cat is coming off soon anyways, as soon as I get my exhaust. Not worried about that.

But, how do you clean the injectors? Just wipe them down real good?
 
Coked injectors can't be just wiped down. It takes a good wire wire wheel to clean any type of coking.
 
ok. So running a wire wheel on them won't hurt the injector itself will it? As long as I don't apply pressure like a madman?
 
I've only put the Mercedes injectors to a wire wheel.
True, R. Diesel designed his original engines to run on peanut oil and also some other crude fuels that were available at time, the thing that should also be taken into consideration was that his engines didn't last anywhere as long as our modern engines do. Also they weren't built to the high tolerances that our engines are.
 
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