Coolant Filters
FTE Chapter Leader
Joined: Sep 2011
Posts: 63,230
Likes: 6,663
From: Great Falls, Montana
I installed one on my 2015 F-350 dually............
https://www.ford-trucks.com/forums/1...l#post15153127
https://www.ford-trucks.com/forums/1...l#post15153127
New User
Joined: Aug 2015
Posts: 15
Likes: 0
enlighten me
Someone enlighten me on why a coolant filter is needed?
On a gas motor coolant never comes in contact with anything unless a head gasket blows and then it just gets in the cylinders.
Im new to owning a diesel, Ive driven many through the FD but owning my first.
I understand the principle on which diesels operate but all these additional systems Im not sure about.
On a gas motor coolant never comes in contact with anything unless a head gasket blows and then it just gets in the cylinders.
Im new to owning a diesel, Ive driven many through the FD but owning my first.
I understand the principle on which diesels operate but all these additional systems Im not sure about.
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Mountain Pass
Joined: Jul 2011
Posts: 209
Likes: 1
The older Ford diesels like the 6.0 & 6.4, the blocks were cast using sand and it did not all come after the casting; both those engines used an internal oil cooler, 6.0 also had an internal EGR cooler and they both would get plugged up with sand and other nasties from the cooling system. the use of a coolant filter would help eliminate these issues. If you drive a fire truck more than likely it has a coolant filter as original equipment, most heavy duty diesels come stock with them but the lighter duty diesels seldom do. I have 2 6.0s in the family and they both plugged the coolers at between 120K & 130K, $3300.00 repair bill. I am not sure if the 6.7 really needs one yet but I think it may be cheap insurance to be on the safe side. Like to hear other opinions on this also.
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Postmaster
Joined: Feb 2006
Posts: 3,201
Likes: 4
From: waynesville, mo.
The "red" antifreeze in the 6.7 is "organic acid technology" or OAT. When it is first installed, the coolant actually forms a "coating" inside the coolant passages by "eating" into the iron. Coolant filters are not necessary. That's why you periodically have to test your coolant to see if it still has "teeth". That's also why you shouldn't use other types of coolant.
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Posting Guru
Joined: Jul 2008
Posts: 1,057
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From: Florida
Dieselsite product description:
The cooling system on the Ford 2011-Current 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.
Cross-Country
Joined: Oct 2014
Posts: 70
Likes: 14
I installed the Dieselsite Coolant filter on my 2015 F350 6.7L 90 days ago at around 8,000 miles. I just changed the first filter today (Dieselsite recommends every 90 days for 1st year and then annually after that). I cut open the filter and the only debris I saw was the metal particles from hacksawing the filter case in half. I couldn't identify any sand or other debris...in fact, the inside of the filter looked brand new. I still like the peace of mind that comes in knowing my coolant isn't sandblasting the coolant system, even if it is a bit of an overkill!
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