It's not a TDI, I have a 30 year old Mercedes that I used to run on B100 bio-diesel, and the type of remark she made always come from people with gasoline powered cars. (Because they don't know that making bio-diesel is a lot cooler than just having a unicorn fart into the car's fuel tank)
Hrm.
Although, she brought up biodiesel out of the blue. It could be that she runs on petrodiesel but has thought of running B20 from a pump or something.
Then again, the newspost on that comic scares me, given how many TDIs have been ruined at the hands of Greasecar. And, WVO isn't biodiesel. It can be used to make biodiesel, but it isn't biodiesel.
Annoyingly, even some people that actually
use WVO in their engines don't understand that distinction...
(My car's a 99.5 Golf TDI, for what it's worth. And, I run on commercial B20, except for one trip a year where I pass a station that sells B99 for cheaper than petrodiesel, so I fill up there every time I pass it.)
Of course, my suspicion is that most New Beetle owners don't even know what "TDI" stands for, and bought a 2.0 or maybe 1.8T instead. And, this might be the TDIClubber mindset, but among all the TDI owners I know, if anyone says "buy a tank of gas", there's a
chorus of "a tank of
fuel!"
So, yeah, I'm not sure on the engine any more.