I have a diesel car, and I was wondering if I could make biodeseil at my house cheaper than regular deisel withouth any speceial equipment I don't already have??

Take a look here

I think the process is a bit more complicated than simple kitchen equipment and there are a couple of somewhat hazardous steps but it is cheaper, yes. Its good to see inquisitive minds posting here -- thanks!

You can get used grease from McDonalds, filter it real well and mix it with diesel. The problem is, you smell like a fast food joint every where you go!