The Salty Captain Engine Flush Kit combines the 1L Engine Flush concentrate with the Captain's Musket 2-in-1 foam and flush gun, providing everything needed to establish a proper engine flushing routine for outboards and personal watercraft in a single kit. The Captain's Musket connects to any standard garden hose and switches between foam wash mode and engine flush mode, simplifying the process of flushing salt and mineral deposits from the engine's internal cooling system after each outing in salt water. The kit provides up to 20 flush cycles from the included 1L bottle at the recommended dosage.Salty Captain Engine Flush Kit 1L - Boat Cleaning Complete Flush Kit - includes the Captain's Musket foam and flush gun plus 1L Engine Flush concentrate for immediate setup of an engine flushing routine Captain's Musket Included - connects to any standard garden hose and switches between foam wash and engine flush modes without tools or adapters Up to 20 Flush Uses - 1L bottle provides approximately 20 engine flush cycles at the recommended 60-90ml per flush dosage