If you go by the definition,
(of a substance) made by chemical synthesis, especially to imitate a natural product.
If only things were so simple because "synthetic" in the lubricant world is no where near close to the definition of the word.
Just a thought for the day.
Um, ok. So why not actually say what you are thinking because what you wrote didn't explain anything.
How about the definition of chemical synthesis:
Chemical synthesis is a purposeful execution of chemical reactions to obtain a product, or several products. This happens by physical and chemical manipulations usually involving one or more reaction.
a process that involves rearrangement of the molecular or ionic structure of a substance, as opposed to a change in physical form or a nuclear reaction.
The problem is that people want Synthetic oil to mean one narrow thing, using specific chemical reactions and feedstocks and don't like it when products that don't fit their ideal definition are labeled "Synthetic." This is just playing around with definitions to make it fit what you wanted in the first place. And then the most absurd argument is "Well, Germany says so and so is Synthetic so that's the rule." Now that is a funny one.
In the end it means absolutely nothing about performance, specs, properties, etc.