Milky Oil

• A milky or whitish color in the outboard engine lower unit gear oil indicates a water leak, which can lead to engine stalling or failure. Outboard engine lower unit leaks often result from a broken propeller seal. The operator should replace the seal and flush the oil to resolve the problem.
  
  

Gear Problems

• If the outboard motor slips out of gear, the shift rod linkage, or linkage connecting to the lever that allows the operator to manually change gears, may be to blame. Any damaged or worn components, such as the bushings or coupler, in the upper or lower shift rod linkage should be replaced.
  
  

Slipping Propeller

• If the outboard engine lower unit propeller sustains damage, often caused by hitting or pushing against an underwater obstruction, it can slip on its hub and cause impaired outboard steering. The operator should inspect both the propeller and hub for damage and replace them as needed.