G'day tlojak38

Goo is good. It means your engine is being properly lubricated.

And just be thankful that you are not a World War I pilot flying a rotary engine in something like a Sopwith Camel. They had engines which used total loss lubrication systems like our glow engines but they used several gallons of nice sticky castor oil per hour and a lot of it came back in the face of the pilot. Those goggles were not just for the wind and the silk scarves were not just to look cool. They had to have something handy to wipe the oil off their faces while being shot at and trying to down the enemy.

AND, those engines did not even have a proper throttle. Just switchable magnetos so the pilot could turn off some cylinders to slow things down a bit. And we thing we have it tough with a bit of oil on our planes!