The usual choice I believe is rapeseed oil. The end product of all those smelly fields of yellow that blot our green and pleasant land and upset those of us with sensitive noses
It's often available quite reasonably in 20l drums from cash and carry places..
I believe any cooking oil will do though... Corn oil, sunflower oil. The cheaper the better it seems.
I don't believe olive oil is a good choice though..
Mix it 50/50 with proper diesel and off you go..
Do be aware though that cooking oil has quite a scouring action and will clean up a diesel tank beautifully and then block your fuel filter as a result. In the first few months of running veg you'll consume a few filters because of this and it's not a bad idea to carry one and the tools to change it by the side of the road...
Some run on waste veg oil, the stuff from the KFC fryers and so on. That's not straightforward as the oil must be at least de-watered and finely filtered before use. Even a Bosch pump has trouble pumping chicken nuggets...
Unless you can get the oil very cheaply I think with the cost of oil vs. the cost of proper diesel and all the faffing around involved makes it barely viable at the moment. It would be different if veg was dirt-cheap and diesel very dear.
Jaap, I don't know what the Irish duty regulations are but in the UK the first 2500 litres of veg per year you use in a road going vehicle are duty-free. After that you’re then supposed to pay normal duty on what you use so you need to add veg accounting to the hassle factor
. Having said that, I got good economy last week around 46 mpg. My Xantia never ever went that far on a litre. At least diesel is less expensive here than in the UK.
Goodness knows where I got that idea from. I seriously worry about me sometimes...