You are looking at jack oil with Stop Leak function. It stops current oil leaks in hydraulic jacks and prevents future leaks. It is suitable for all types of bottle and floor jacks. The compound does not create corrosion, does not clog the jack mechanism and does not form foam during operation. Compatible with all types of mineral, semisynthetic and synthetic oils on a petroleum basis. It is a reliable means to restore the performance of hydraulic jacks and protect them from wear. It will help to avoid expensive repair or replacement of the jack.