Guys,
I want to buy a 2004 Audi 2.5 V6 Tdi and my question is can I drive it with cooking oil? Some people said I cant because its a direct injection TDI but what if I mix 70:30 with regular diesel and cooking oil? I know that it will 100% work on a w124 Diesel. But what about the TDIs?
Thanks for y'alls answers
You will have enough issues with a 17 year old Audi out of warranty. Why complicate matters with running on cooking oil?
Dang it, I have a tendency to babble,
Much better answer than mine. 🥴
Short answer.... yes. But it isn’t plug and play to do it correctly. It has to be strained meticulously first, then if you haven’t noticed cooking oil tends to solidify into gel around 50 degrees. You have to install special equipment to keep it high enough temperature and keep it from clogging up your fuel system. And even then over time it will still build up in your fuel lines. One of my boss’s back in 2007 decided to go green with his VW TDI,, spent about 1500 bucks modifying it and when winter came below 30 degrees he found he had to park it in the garage or it would still gel up.
Ok thanks and what about a mixture? I want to add 40% diesel so it will start with no Problems. Ive also heard the direct injection could be a problem when you use oil.
No experience with people running mixtures. As I was once told they don’t mix and one will float on top the other in the tank. Don’t know if that’s correct or not, but everyone I know running biodiesel ran one or the other.
If you care about your car and wallet, of course not.
If you like taking risks and don't care about a 2 decade old Audi... then thats your call.
https://carkiller.com/scottykilmer/qa/can-i-run-an-old-camry-on-cooking-oil/
There's a big process to turn in into bio-diesel. You don't just cut it with diesel and you're off. There's a lot of science and chemistry = $$$$$
Before electric cars became more common, biodiesel fueled vehicles were a thing for sustainability enthusiasts. Folks were running old diesel cars running used cooking oil from fast food joints.
It is quite possible, but not sure if it is worth the effort. As a project it would be fun, but with projects, you never know the reliability of it.
As others have stated, yes you can, but it may not be worth it. If you live in a warm climate the gelling problem may not be an issue. However there is a lot that goes into cleaning the gunk out of the used oil. That is an ordeal in itself from what I've read about it.
Now, if I were going to do this I would want an older car than you have, ideally one of the 1970s-80s mercedes. The simpler the better for doing something like this.
Here is a site with a bit of information on the best cars to convert and some useful links: https://axleaddict.com/cars/Waste-Vegetable-Oil-Fueled-Vehicles
