So I am getting ready to change antifreeze and all hoses...... Will flush the system a couple of times with fresh water to get all old stuff out prior to putting new 50/50 mixture in. However does anybody additionally use any commercial flush products and if so what do you use that is gentle on the marine engine parts. My engine is running fine, just don't know when it was done last if at all. Engine has about 575 hours.
Thanks
Thanks