No announcement yet.

When to change oil?

  • Filter
  • Time
  • Show
Clear All
new posts

  • When to change oil?

    How do I know when it's time to change the lube oil? Does mercury suggest a certain intervel? I pulled the plug and drained a little into a cup and it looks like crap. In fact my plug has some metal chunks about like grains of sugar on it and the oil looks like black mellalic paint? Somehow I don't think that's good:( (it also stinks bad)

  • #2
    It is recommended to change the gearlube every 100 hours or once every season (whichever comes first). With a new sterndrive you should change it in the first 10 or 20 hours. Gearlube is cheap compared to a new sterndrive, so change it more often if you wish.

    As far as the gearlube looking like metallic paint, I would guess that a gear failure is in its first stages. It is normal for some metal fillings to be on the drain plug, but there should not be any significant chunks. I would recommend getting the sterndrive inspected, or replacing it with a new one.
    Tech Support
    Brunswick Corporation is the original equipment manufacturer (OEM). Sterndrive Engineering, Inc. (or SEI) is not affiliated with the Brunswick Corporation and is not authorized to sell or service Brunswick products.