NXT-503 Universal Oil Stop Leak is an advanced seal conditioning additive for engine, differential, power steering, gear box and hydraulic systems. Treats gaskets and seals to help stop and prevent minor seal leaks.

  • Stops and prevents oil leakage from leaking seals in engine, transmission (manual or automatic), power steering, differential and hydraulic systems
  • Helps seal performance
  • Suitable for all oils (do not use in brake fluid)