Can I Just P in My D F Tank?

The actual urea concentration is around nine point three grams per leter. If you think about the urea concentration in d e f that's available in stores for your big rigs, that's around 32 five % urea. So it's like to say, really that saying you can p in there is like saying you can put sugar in a gas tank. It's not going to work out well, and you should not do it.