Repco Engine Oil Stop Leak 300mL Repco Engine Stop Leak reduces annoying oil leaks in all petrol, diesel and LPG engines. With this Oil Stop Leak, you can get back on the road in as little time as possible without replacing oil seals burried deep in your engine bay. Fix oil leaks quickly and easily without any special tools or know-how. Repco stock the widest range of head gasket repair, engine flush, and rear main seal repair fluids that can keep your car in tip top condition. An abundance of switches and sensors throughout an engine provide vital feedback to monitor its condition but any of these can contribute to poor running or excess fuel consumption if permitted to get clogged or dirty. Repco stock a range of engine additives to help combat this and ensure your engine is working its best.