PO 420 and Lacquer Thinner

So my array of dash check engine lights came on as I left lunch yesterday, it is a PO 420, catalytic converter bank 1. Auto Zone priced the part at $650ish, I'm waiting for a price to replace it from my local Toyota dealership, I know a service writer there and he cuts me some slack. Anyway, of course I went to Google on it and eventually ended up on You Tube and the videos of using lacquer thinner in a ½ tank of gas and running it out "cleans" the catalytic converter and clears the dash lights.

So, I am tempted to try this as a gallon of it is like $13. Anyone here ever tried it?

 

Nope....and probably never will....

 

That would be a hell no from me.