Dieselsite CFIK67 Coolant Filter Kit
The cooling system on the 6.7L trucks is more complex than in previous years. There are actually two coolant circuits. One circuit cools the auxiliary coolers (low temp system), and one cools the engine and oil cooler (high temp system). The latter is the one we are concerned with. We originally offered a dual filtration system that filtered both systems simultaneously, but found that the secondary system needed very little attention after all. It wasn't worth the added expense of the extra filtration. So, we decided to re-design the system to create a more affordable coolant filter system
Coolant filters are not a new idea to the diesel engine world. They come in most OEM applications for medium duty and OTR tractor trailer rigs. The idea was somehow tossed aside for light duty applications, most likely due to cost. For our light duty trucks it is a very important issue that needed to be addressed. Many diesel engines - like the Powerstroke - are cast with sand in the process. This sand is NOT completely removed from the system. In fact, much of this sand leaches out of the casting over time. The sand wears away at water pump seals, hoses and radiators. Removal of this sand can greatly increase your water pump life.
In addition to sand, there are other things that the filter is removing. SCAs, or supplemental coolant additives used in protecting against cavitation, often flake off the walls. This "precipitate" is a very abrasive particle - like a scale - floating around freely in the system unless caught by a filter.
The DIESELSITE Coolant Filter Install Kit will remove the loose particles in your cooling system and give your water pumps, radiators, water necks and radiator hoses the protection they need from these abrasive materials. Wear is virtually eliminated by the removal of undesirable elements in your system. The desirable elements, like the actual chemical used in the SCA is not removed.
Recommendations on filter changes:
Use one filter every three months for the first nine months after installation. The lack of flow into the expansion tank is an indication that your filter is plugged. Change the filter if it should plug before the 3-month interval. After the 4th filter is installed your filter should be changed once per year.