Join Date: Apr 2002
Location: Lexington, KY, USA
Every 6K, same as engine oil interval. If it is rally dark with suspended particles or you see silver specs in the drained fluid, it is time to take it in and have it checked by the mechanics! I had my bearing replaced at 22K miles. The fluid was always cloudy, and would clear leaving a layer of dark material on the bottom of the collection vessel. I also noticed small silver flecks in mine right before I had it replaced. I have 50K on the replacement bearing and the fluid I drain is clear, as it should be.