Hi,
Just wondering if you have already installed a coolant filter? It helps prolong the life of the 6 Liter diesel engines.
Napa #4070 filters for the coolant, and kit #FIL 4019 to install it in a heater hose line. Some are putting them in with tiny ball valves, so they can shut off the coolant lines to prevent coolant loss while changing the filters. The first one will clog in about 800 miles, then second should last 2,000 miles, third will last until the end of next summer. Then change them at the end of each summer, just before fall, when you will need the heater again.
Fred.
PS: I also have a coolant filter on my 460" gas engine motorhome, and keep changing it each year since it was new. Never had a problem with the engine, water pump, or any overheating.
