Originally Posted by casey1999
I don't know if it good or bad (different opinions on this), but I fresh water flush my 30 year old Yanmar 3gmd (direct sea water cooled) engine after each use on return to the dock. I would rather have fresh water than salt sitting in the engine when not in use.
As far as the red lyme acid flush, I have heard that this could cause more problems than it solves. The acid could attack your "good" metals in the engine and cause more rapid corrosion than necessary. I am thinking of doing a 24 hour 50% vinegar and water soak then flush with water.
Can you describe your fresh water flush setup/procedure? How long does it take to perform?
Re: Rydlyme -- my understanding is that unlike generic scale solvents (CLR, muratic acid, etc.), Rydlyme is specifically engineered for this type of use, and will not attack metals.