PT-31 CORROSION INHIBITORPENETRATES EXISTING CORROSIONPROTECTS ENGINE BEARINGS DURING STORAGEONE TREATMENT LASTS FOR MONTHSRail Zip - After Run™ PT-31SKU: PT-31$6.19PriceQuantity*Add to CartProduct InfoTreats engines and inhibits corrosion from forming. Adding After Run 2 to the engine protects all of the internal parts. One treatment lasts for months. Ideal for coating metal push rods before inserting them into sleeves. Works best on: Gas or Glow Engines Metal