If you use soap on a regular basis, does anybody worry about soap skum building up and clogging any parts of the cooling system over time? Also, what happens to soap residue when heated to 140 degrees in exhaust manafold and risers??

Check out this web sight for tablets used in flushing. www.bluethru.com out of Florida. I have not yet had a chance to try this product, but sounds easy & is not to expensive insurance. It still does not address your neighbors

I use Salt Away as soon as I get back from the marina. I never heard of anyone using dish soap, but if it works what the heck! And as for the neighbors, who cares, I also open and close the silent choice so I get a good flush out the thru hull and prop exhaust.

With the small amount of soap in there and the thousands of gallons of water that flow through when you run there is not likely to be any build up. I have never seen any in there on disassembly. I usually only use about 2 ounces of soap in a Salt Away flusher to do each engine. An added benefit is that you see bubbles in the water around the boat on start up so you know you have good water flow in the engines.

Great info guys, I will start doing this, its easy to add it to the strainers!!!! Just a couple ounces Ted?

I always flush when I get the boat home. Even if I'm too tired to wash the boat, I flush the engine. Wash the boat in the morning. I also use soap, usually car wash soap in a SaltAway dispenser. Kill the engine when it's still a little soapy, just like SaltAway recommends.

Jim