Hi all happy new year...I have been looking at past forum material but can't find anything on fuel mix. I have been told that it's ok to run the M20 on straight unleaded fuel won't harm it. Another said don't use fuel additives for side values as it fuses to the exhaust valve. Yet another says use a cap of two stroke oil in every tank. And yet another says use a cup of diesel. Does someone have the ultimate mix for unleaded fuel for the old M20s?