Flush kit........
On the top head cover to your motor, where your water outlet goes to your exhaust system is normally where the 587 flush connector is installed. If you don't have one, then you can go to your local auto parts store and get a radiator flush kit. The kit comes with a couple different size "T's" with a water hose connection. You install that in between the outlet of your water flow from the engine and exhaust. Put a couple hose clamps on and there you go, a way to flush your motor on the water hose.