I have a 2012 Etec 90. It is 'saltwater approved'. I will be using on/off over 2 months in FL but may have hard time flushing after every use. Is it necessary? What does saltwater approved really mean? What about Salt Away or similar products, do they work or are they harmful to the engine? I will definitely try and find a fresh water source to flush after use but if not, what is going to happen? I will definitely flush it when I get back home for however long it takes to clean out any salt residue. Public launches, my storage yard and condo rental have no access to fresh water. What about car wash wand to flushing port with or without pulling wand trigger, on low pressure I would expect some water to go into passages but think high pressure might do harm? Thanks.
It is always best to flush an outboard after running in saltwater. If you can't, that is not the end of the world and the motor will not fall apart. Many commercial fisherman and crabbers only flush their motors occasionally.
If there are freshwater lakes or rivers nearby, just backing the trailer in and running the motor goes a long way in cleaning out the engine. Many do-it-yourself car wash places have a faucet on the premises that you can use if you bring your own hose.
Salt water approved means that there are additional stainless steel items and pieces with protective coatings on them to minimize rust or corrosion.