So i'm running my DF520 and decided to run some coal saturday for a test run. The blower had shut down and tripped the reset button on the fan. So I checked the blower over and then filled both ports on the blower with oil and it seemed to be up and running without a problem. After i watched over it for a bit, I decided to go trick or treating with my son and came back to a tripped reset button on the blower. I tried to turn it back on and realized that there was oil leaking from the motor, and a fresh marking of oil on the ground. So the blower is leaking oil and not holding the oil in. Any suggestions? I did want everyone to know that i used synthetic oil.