No biggie. As yapoy said pa change oil mo muna and make sure na tama yung nilagay na oil for diesel engines. In the off chance na manipis na flushing oil or gasoline engine oil ang ginamit nung last oil change.

If malakas pa rin oil consumption saka mo na patingnan. If kelangan talaga overhaul decide if it is worth it or ibenta na lang bago lumakas yung usok.