Dirty Synthetic Oil. Change?

[gR3yWolf]

And ensure you always pour that dirty oil down the nearest storm drain so that it can get right back to nature....

quite true...it's very important that we all recylce. 8)

 

[arado]

I use Mobil 1 exclusively in all my engines. This after many years of trials. I change oil once a year. However, none of my engines mileage exceed 7k. I consider this excellent maintenance. Bikes get 4T cars get 0-40 and lawn tractors 15-50...