New record on mpg in my Jetta

[Nick The Great]

Sweet!

 

[cRiPpLe_rOoStEr]

I filter the waste veggy oil. (...) I keep a spare diesel filter handy in case of any clogging that might occur.

If you didn't filter the WVO I'm sure you would really need the spare filter sooner...

 

[Bernie]

I'd be concerned about the WVO during colder months. Usually with WVO it's run from a separate tank with a heater because otherwise it'll tend to gel up.

 

[Carneyman]

Just throw some diesel anti-gel stuff in it and you should be aight unless it gets hella cold.

 

[cRiPpLe_rOoStEr]

Usually with WVO it's run from a separate tank with a heater because otherwise it'll tend to gel up.

It's also reported to reduce polymerization of the glycerin when the oil is burned.

 

[Black02Silverado]

I'd be concerned about the WVO during colder months. Usually with WVO it's run from a separate tank with a heater because otherwise it'll tend to gel up.

I only run it in the summer. If it gets cool out like in the 40's I notice it is harder to start so I just keep it in the tank during the hot NC summer months.

 

[Bernie]

Just throw some diesel anti-gel stuff in it and you should be aight unless it gets hella cold.

Probably not. A lot of places now are using a cooking oil that's semi-solid at room temperature, and it doesn't really thin out until it's heated to about 120-140 degrees. That'll clog up your filter in no time, and no telling what effect a semi-paste will have on your pumps, but I doubt it'll be good.

Most year-round WVO setups use two tanks, one with regular diesel and a second tank with the WVO. The WVO tank has a heater in it (you can use copper tubing and just tap off the radiator) and sometimes also a heated filter. Then there's a valve to switch between the tanks, and to purge the fuel system of WVO before shutting down.

 

[cRiPpLe_rOoStEr]

A lot of places now are using a cooking oil that's semi-solid at room temperature, and it doesn't really thin out until it's heated to about 120-140 degrees.

The so-called "trans fat" or hydrogenated vegetable fat. But it's OK to make biodiesel, just like animal lard.