Whatever you say... All I use and all I will EVER use. Synthetic or not is irrevelant to me. It works, has excellent shelf life and my saws run well on it. Far as cost, I don't care and I can well afford it. In my case it a requirement. You may be different and on that score, don't care either. I'm the captain of my ship, just like you pilot yours.It's not synthetic fuel...... it's not even really special. It's just more expensive and not needed for daily use.