Synthetic Shock Oil - 3wt - 1 U.S. quart Ester-based, full synthetic race-grade shock fluid formulated to withstand extreme temperatures and loads, Industry leading additive system ensures clean, trouble- operation over extended usage periods, Regenerative synthetic polymers resist mechanical sheering and viscosity breakdown, ing the protection and film strength, Friction reducing additives eliminate seal drag, Extremely high Viscosity Index over 350+, Compatible with petroleum and synthetic suspension fluids