Originally posted by: GTFan
But how much prep do you have to do to make that oil usable by your engine? Not to mention trips to all those restaurants. I might be wrong here but it seems that the tradeoff for free miles (with veggie oil) might be the time it takes to get them. Not that there's anything wrong with that.
Originally posted by: itsme
and that veggie car is awesome. i heard about these conversions being done, but never really saw one. so how do you prep your oil? what kinda mileage do you get? where does the oil go in? does injection still work normally?
I spend about a half hour a week collecing 35-50 gallons of oil. Usually I'll collect oil while I am out doing other things. In some cases like the Chinese Resturant, I'll call in a to go order and pick up some food and fuel. I have a hand cranked Pump and I pump the oil into 5 gallon jugs. I bring the jugs home and let them sit for a week or more so all the crumbs sink to the bottom.
Pump and jugs of oil.
After it has settled I pour it into a 55 gallon drum That has a pump that is hooked up to a strainer and a filter and then a gas pump nozzle. The oil is cleaned and filtered as I fill the car. I pump the oil into the main fuel tank.
Pre-Filter Pump
The conversion I built is a "Single Tank", where the car runs 100% full time on 100% Vegetable Oil. The other wy to go is "Two Tank" system. Where there is a large Vegetable oil tank and a smaller tank for diesel. In those systems the engine is tarted and shut down on Diesel fuel but when it's at operating temp it runs on Veg Oil.
I designed the prefilter system so the so the time investment is minimal in preping the oil.
I commute 1000 miles a week, I use about 25 gallons of fuel a week. Right now Diesel fuel in my area is $2.19... I'll take the $54.75 a week for a 1/2 hours work. my car gets anywhere from 45-53 MPG depending on how I drive it.
The injection still works normally, The fuel just needs to be heated before it's injected. I did install larger europen spec injectors when I converted but, I don't know as that was 100% needed but, it added 20 HP.
If you want to know more,
Check out the Straight Vegtable Oil as Fuel Forum @ infopop., that is where I learned about how to do it, hung out there and asked questions for a year and a half.
This Link goes to a thread on the biodiesel infopop forum. It's pretty much a build log of how I did it.