Power Steering & Trim Fluid used for power steering pumps and trim cylinders on Volvo Penta marine engines. Power Steering & Trim Fluid | Volvo Penta 3851039 Power Steering & Trim Fluid used for power steering pumps and trim cylinders on Volvo Penta marine engines Replaces earlier Volvo DuraPlus fluid with the same part number This product can be combined with DuraPlus fluid If system fluid is unknown it should be drained, flushed and refilled Comes in plastic screw top 16 oz. bottle