Is there anyway to "flush" out the engine block of a 350 MAG??? Just would like to get as much of the scale/crap out as possible.....if that's even possible. Any suggestions???

merc has a flush adaptor kits but IMO its really not any better than running the motor on a clean water supply.

Some people like salt away and some do not. Some people use dawn dish soap to. Just saying

I do flush it every outing with the flush kit. I was talking more about getting out the old rusty scale, and just general crap that builds up in engines after years. Are there drains other than the 4 blue plugs that can get the block a bit cleaner???? Just wondering.....

Nope,... Not without pullin' the core plugs,....