We continue to see catastrophic failures with engines do to cooler neglect. Fresh water cooler maintenance is a must for long engine life in a marine salt water service. It is so easy to fit fresh water flush systems and use them. If you wish to discuss cooler life and how to extend cooler service life, call and discuss. This vessel was just inspected and reported to have the proper cooler service. You can see in the first picture how poor the cooling system was in. This was caused by running the coolant past its service life. This could have been avoided by properly changing the coolant out. The second picture shows how a simple machining can add a fresh water flush to your system and help your fresh water side of the system.