1999 Volvo Penta "WT" Models Workshop Manual, Page 20Get this manual
Power Steering Fluid Level
Maintain the level with DumPus Power TrimTiltSteering Fluid or OMC Power Trim Tift and Power Steering FluidApproved power steering fluids such as GM power steering fluid or Oexron ff automatic transmission fluid can also be usedDo not overfill the pump reservoir
Steering System Lubrication _
Every 60 days, grease the steering ram with Volvo Penta Grease or OMC Tripfe-Guard(if) grease
Power TrimTilt-Fluid Level
[] At the beginning of each boating season, check the fluid level in the reservoir as follows: Level should be between the "MIN" and "MAX" marks on the reservoir