RKOCH said:
DO NOT!!! RUN WVO blended with diesel, it will coke up your engine! It must be heated to 140+ degrees to burn the glycerin or it will coke.
If memory serves, there are people out there who are running a 30% WVO mix unheated without issues over an extended period of time. You'll certainly have coking issues if you go higher, but at 30%, it's supposedly safe. I've never tried this myself, so I'm just going by what other people are saying...
160k87F250 said:
RKOCH,
I am thinking in terms of WMO only, since I can get plenty of it. Does what you say about the WVO apply to WMO also? What is BIO and how does that work?
I'm pretty sure that you don't need to heat up waste engine oil. That said, make sure you filter it VERY THOROUGHLY before putting it into your tanks. On a discussion on another board, someone pointed out that WMO has all of the junk that the engine oil filter didn't filter out, and that fuel systems are a lot more susceptible to FOD than oil systems are. While the main fuel filter should catch most to all of it, I personally wouldn't take the chance.
Biodiesel is basically vegetable oil mixed with other chemicals to give you properties identical to diesel fuel you get at the pump. The nice thing with Bio-D is that you don't have to modify the fuel system at all in order to run it. You can actually buy Bio-D from some fuel depots, although it isn't easy to find...retail Bio-D is usually about the same price (or even more expensive) than dino-diesel, and is made with "******" oil. If you get the proper formula and the equipment to do so, you can also brew your own Bio-D using waste vegetable oil instead of ****** oil...but, you have to buy the equipment and the other chemicals, so it's not "free" like running WVO is. It's really a matter of taste...personally, I don't have the facilities to brew Bio-D and didn't want to modify my fuel system, so I'm buying Bio-D from a station in San Jose...