I went through the biodiesel thing a few years ago, and still have the machine out the back of the shed. Its a great idea if you have the fat supply, and the time to make it as its a time consuming process, and will stuff your engine if you don,t get it right. The older diesels, such as the hilux I had are best as they can run on lower grade diesel.I put 400 ltrs through my 2.8 hilux with no damage, and at 28c a ltr , it was cheap.But now I am too lazy, so I buy it . Mixing it 50/50 with ordinary diesel seems to work , also.I buy bulk in town, its easier. Bill

There was a bloke where I worked who was running his old toyota diesel just on fryer oil he got from fish and chip shops etc. It had to be vegetable oil and I don't know the mechanics of how it was used, but it wasn't bio-diesel, just fryer fat. Trouble was when he used it on the beach all the seagulls used to chase after him..

would homemade diesel be of a high enough standard to use in common rail diesel engines?
old engines would run on just about any light oil but the new engines might be to safisticated don't think i would risk it to expensive if it does any damage
if you hire a truck they usually have a sign that says not to use any biodiesel in them

Unless you can really refine the oil to great standards, I wouldn,t use it in crd engines. Its not of a high enough standard. The older engines run it fine , though.Your warentee will be void, and a late model hilux fuel system runs to $8000 to replace.

You can't use bio diesel in common rail the injector pump & injector will clog within a short time. Good in old diesel motors only.
Regards