I notice yesterday when I got done brush hogging about 3/4 of a acre my new holland would blow a light buff of light blue smoke when I hit the throttle. It hasn't be running hot or rough in anyway. Starts right up and idles fine. Doesn't smoke during start up either. Oil is at a proper level and only has about 10hrs on it. Just wanna figure out what might be causing it so I can get it fixed before it leads to a problem. Any ideas.