Do you realize its made of crude oil, which is not some trivial molecule like h2o that just has many same copies. There are different-quality crude oil, ie IIR

Do you realize its made of crude oil, which is not some trivial molecule like h2o that just has many same copies. There are different-quality crude oil, ie IIRC russian one is on averafe lower quality. Its not what they add (which varies based on what they currently work on), but what was there before. And once you burn it what it becomes.