Salty Captain Engine Flush is a concentrated salt removal solution formulated to flush corrosive salt, dirt, and mineral deposits from the internal cooling systems of outboard motors and personal watercraft engines, protecting cooling passages from the progressive corrosion and blockage caused by salt crystallisation after use in salt water. The 1L bottle provides up to 20 flush cycles when used at the recommended 60-90ml per flush with the Captain's Musket, making it a cost-effective option for post-outing engine maintenance. The formula is also effective for flushing rods, reels, trailers, and other equipment exposed to salt water.Salty Captain Engine Flush 1L - Boat Cleaning Salt and Mineral Deposit Removal - flushes corrosive salt, dirt, and mineral buildup from outboard and PWC cooling systems after salt water use Up to 20 Flush Uses Per Litre - concentrated formula provides up to 20 engine flush cycles from a single 1L bottle at the recommended 60-90ml per flush Compatible with Captain's Musket - designed to be used with the Captain's Musket for simple, connected flush application to outboard and PWC engines