Rislone High Mileage Compression Repair 500ml Engine components wear down over time, causing low compression and decreased power. This product renews worn engines, rebuilds compression, restores lost power and repairs engine blow-by. It’s liquid technology in a bottle. Rislone Compression Repair with Ring Seal works by freeing sticky rings and filling gaps and scratches in cylinder walls, eliminating blow-by and compression loss while also reducing friction and wear. It does not contain any harmful lead or other metals that could damage your engine or be burned and contaminate emissions components and the environment. 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.