Fox Full Synthetic Oil Keep Your Suspension Honest Fresh oil is the cheapest suspension upgrade you're not doing often enough. When the bath oil in your lowers breaks down or gets contaminated, small-bump sensitivity goes first, then your seals pay the price. Using the correct fluid at service keeps your fork or shock performing the way it did out of the box. Full synthetic formula resists breakdown over hard use and temperature swings, so your damping stays consistent from the first lap to the last. Features Full synthetic formula resists thermal breakdown and maintains consistent viscosity across a wide temperature range Fox-spec fluid formulated for use in Fox forks and shocks to protect seals and internal components during service Compatible with Fox lower leg bath service restores small-bump sensitivity and extends seal life between full rebuilds Correct fluid for damper and air spring service using the right oil at the right viscosity keeps your suspension tuned the way it left the factory | Fox Racing Shox | Full Synthetic Oil | Clear | 1. 5Wt, 16Oz Transfer Dropper Seatposts