Oil volume requirements depend on the model and year of your RockShox fork. The best place to find exact requirements is in the Oil, Air, Coil, Tokens and Specifications document. Find this and other relevant information on the SRAM Service Site, or enter your serial number at the RockShox Trailhead App for further tuning and service advice.
Note: Only use RockShox branded suspension fluid. Our fluids are designed and tested to ensure correct seal compatibility. Non-SRAM/RockShox fluids may cause excessive or premature wear, shrinking/swelling of seals, or decreased performance.