Product Info Catalog Automotive Vehicle Fluids Additives Power Steering/Stop Leak Fluid, 12-oz. Power Steering/Stop Leak Fluid, 12-oz. Request a Quote UPC: 71153660465 SKU: 875002 Model Number: 18666 STP, 12 OZ, Power Steering & Stop Leak, Formulated To Stop Or Reduce Loss Of Fluid Caused By Leaky Seals Due To Wear Or Shrinkage.