can I run my car on Kerosene?

Lash it in. What’s the worst that could happen? Keep us updated.

What's the ratio of diesel to cooking oil?

I remember doing it maybe 10 years ago, it was all the rage to head up north with a van full of 50L cans. this was with a mid 2000's berlingo.

Aldi did a deal on cooking oil and there was auld lads filling trolleys with the stuff.

It's illegal to use in your car.

The older the car the more likely it is to run well. If you're running neat kero (ie without some diesel, green diesel, 2 stroke etc) then it will likely ruin a lot of your fuel system (eg fuel pump) due to lesser lubricity.

I did it for years, mixing kero with waste engine oil. I remember paying 37c per liter! Old Carinas, 406, anything with a straight diesel and ideally indirect injection is perfect. OM606 comes to mind. I certainly wouldnt put anything common rail or more modern than the early 2000's through it though. They arent built for it.

The trick is to find a local-ish station that has been done multiple times for selling washed diesel. I used to be able to put the green nozzle directly into the car! When I was feeling flush I would alternate between green and kero+waste oil

keep the head down as the Landcruiser is filled with green and send the kid in to pay in cash at my local station.

Holy smoke when did Boards.ie become Banditos.ie ?🙂

It depends on the age of the car, mechanics used put it in for cleaning out injectors etc that was for diesel cars.

Unless it is an old car it will destroy the engine In a very short time.

Best bet as mentioned above is to horse it in and see what happens after a few weeks, failing that ask a friendly mechanic if it is an option for your car.