Recently got several bottles of VP synthetic premix oil. Was all excited. Mixed with non-ethanol, 93 octane @ 40:1. After one gallon in my 562 (ported) screen was black with spooge. Inside the muffler was covered in it. Buildup on the exhaust side of the piston. The plug was dry and a uniform light tan in color (good), lots of spooge on the threads though. This is some thick, gooey, spooge. However, the air filter was a bit loaded up from dropping and cutting up a few dead trees. I’ve run only the VP premix fuel in this saw until I bought their 2 stroke oil to mix my own. Until then the screen looked brand new. I know they used Motul in their fuel and their premix oil is different. The flashpoint for the VP oil is listed at 80 deg C (176 F). The only thing that reflects that is how nice my plug looks. The pump gas I purchased is from a station that has that sells a lot of the premium but the gas does have that stanky sulfur smell. Do you all have any insights or recommendations ?