Just so you have a clue, here is one...
Oils come in many grades... BLO is pretty close to the bottom... The designation BLO means it is low-grade oil going in. The quality is variable, based on the current market. they throw a lot of stuff in it to help it cure and to prevent it from curing too fast. That would be for shelf life, not quality.
Higher grades of oil, both tung and linseed, get used for serious finishes. They never get called BLO because they are not.
Now, for the first time in your life you actually know something about BLO.
If the best you can complain about is post count, have at it...
