And in case reading the two links is too hard.

Urea comes from Urine. Urine, in fact gets its name from Urea, one of it's principal components.

If it weren't for the other things in urine like salt and a number of other things you could literally **** in your DEF tank. But don't, those other ingredients will break things in the DEF system.

tldr; Petroleum has absolutely nothing to do with urea production.

 

Pig pee.

 

https://en.m.wikipedia.org/wiki/Urea

ProductionEdit

Urea is produced on an industrial scale: In 2012, worldwide production capacity was approximately 184 million tonnes.[46]

Industrial methodsEdit

For use in industry, urea is produced from synthetic ammonia and carbon dioxide. As large quantities of carbon dioxide are produced during the ammonia manufacturing process as a byproduct from hydrocarbons (predominantly natural gas, less often petroleum derivatives), or occasionally from coal (steam shift reaction), urea production plants are almost always located adjacent to the site where the ammonia is manufactured. Although natural gas is both the most economical and the most widely available ammonia plant feedstock, plants using it do not produce quite as much carbon dioxide from the process as is needed to convert their entire ammonia output into urea. In recent years new technologies such as the KM-CDR process[47][48] have been developed to recover supplementary carbon dioxide from the combustion exhaust gases produced in the fired reforming furnace of the ammonia synthesis gas plant, allowing operators of stand-alone nitrogen fertilizer complexes to avoid the need to handle and market ammonia as a separate product and also to reduce their greenhouse gas emissions to the atmosphere.

 

First isolated from urine. First organic compound to be artificially synthesized. Now produced industrially from ammonia and carbon dioxide by the petrochemical industry for both automotive use and fertilizer.

 

I stand corrected.

It's too bad that industy can ignore the truely vast quantities of urea produced naturally and find a way to instead use huge amounts of resources to make it synthetically.

 

I know!! Livestock and bars!

 

If we assume cows are spherical with a 1 meter diameter and that humans make 10 grams of urea per day then all people make 80,000 tons per day or 29 billion tons per year. Run it through a pressure reverse osmosis filter to get rid of most of the water, and then some hand waving, and then profit. Of course we don't and can't really have a collection system to gather all of it.

P.S. I was thinking about this side track and it occured to me that what I said sounds like I was calling 318 a liar. I did not intend that. I meant the talking heads on the TV are liars. But since it probably came off that way I feel I have to apologize to 318. Sometimes it doesn't matter what you meant but only what you actually said. So,

Mr 318, I apologize for saying that.

 

I just found some at my locally Wally World and jumped on it. They had three on the shelf, and I grabbed two. $23.44 per gallon jug.

And for you ******* who were cluttering up my thread, they had DEF fluid as well.