Longevity Mods
Swapped to all CAT spin on filters
Increased oil capacity to +16 quarts
Installed a bypass filter
Upgraded the oil pan heater
Installed Banks rear diff cover
Seriously thinking about replacing the CP4 with a DCR.....
The reason to swap to CAT filters is the availability of high quality filters. Caterpillar is the largest manufacuter of diesel engines and are worldwide. This allows them the market to produce the highest quality filters without concern for pricepoint. If you have a high-value piece of equipment you're not worried about a $10-30 cost delta on a filter, this can't be said for the personal transportation market.
The new oil pan offered multiple advantages. Inceased capacity, more oil equals less work it has to do, therefore longer life. The pan came with two threaded ports, one for the heater, and I used the other as the return port for the bypass filter. And last but not least, the drain design allows for total evacuation of the used oil. When I removed the factory pan more oil was left that I would have ever thought, ~10-12 ounces.
Marketed bypass filter setups are way over-priced, IMO. Liked the thought of maximum filtration but the entry price....way to high. I ended up spending ~$100 on parts and $45 on the filter, this I can live with. Used the amsoil bypass filter, as other sellers do not offer anything close to their receipe. Your basic choice is a toilet paper filter can or the amsoil. As I run amsoil oil anyway, the 2 micron spin on filter fit the bill. Couple of hydraulic hoses, fittings, and a filter base and we're in business. At ~$150 the ROI argument really goes away.
Since working in Alaska many moons ago and living in snow country, I install all kinds of heaters on my vechicles, something about cranking up a car in subzero temps like it was 70 degrees outside makes me feel good. On top of this the weakness of the 6.7 is oil flow, using to thick of an oil in cold temps has taken out many of them. Until now I used a 150watt heating pad stuck to the bottom of the oil pan. With the new pan there is a 400w immersed element.
Pics of install....
The new engine block oil filter adaptor has extra ports, used the 1/4" NPT one for the supply to bypass filter. The oil pan has a 1/2" threaded port that I used for the return. Mounted the filter base on outside passenger frame rail.
Pic of new main tank water seperator and fuel filter setup. The filter on top of engine is replaced with a manifold.
The oil heater fitment is tight, the connector has to be pointed toward front of truck, but it does fit. About 1/8" clearance.
When the truck was new I added a in-bed aux fuel tank and placed a water seperator filter between it and the factory tank. Swapped out to the same part number filter as the new main tank filter set-up. I was using the shorter version but wanted to simplify, the bottom still sits three inches above the body panel edge.
Link to orginal aux tank/pump/filter install
https://www.ford-trucks.com/forums/1...l#post18155003
Also picked up the cat version filter for the S&S DPK I installed a few months ago. This will go away if I choose to do the DCR pump conversion. Haven't swapped the filter out as its only has a couple thousand miles on it.
https://www.industrialstop.com/produ...4641039d&_ss=r
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Ford uses one in the filter, and Cat doesn't put the bypass in the filters but either in the filter housing or the block.
Ford Trucks for Ford Truck Enthusiasts
I make informed choices, some do not. If I was making a product to hand to john Q. public I'd have a bypas valve in it to CMA.
so .proceed with caution if you replace the oem plastic filters which do not rust with metal can filters which could rust.
in my mind..this would not be a move in the direction of reliability.
Don't forget to keep up on coolant maintenance. These trucks have a fluid-fluid cooler on everything. Modern diesel engines tax the coolant pretty bad as well. Not from the perspective of cooling itself, but I read an interesting article a few years back that explained how the cylinder pressures that are being created on these things are expanding and contracting the cylinder walls with each firing. This rapid expansion and contraction creates cavitation of the coolant on the surface of the water jacket side. If the additives in the coolant that help prevent this cavitation get used up then you subject the blocks to erosion. Leading to problems down the road.
CP4 replacement is on my radar too.
I make informed choices, some do not. If I was making a product to hand to john Q. public I'd have a bypass valve in it to CMA.
I was hoping the OP had found a filter base with a bypass in it like some oem's have used in the past.
Even limited flow can cause cavitation and bearings don't like cavitation any more than starvation. The bearings just last a little longer with cavitation damage than no lube.
The oil heater will go a long way in preventing the most common need for a bypass, but when Ford is cheaping out on the passenger side locking hub, I doubt they would have put a bypass in the filter if it wasn't saving them money on oil starvation related failures.
Don't forget to keep up on coolant maintenance. These trucks have a fluid-fluid cooler on everything. Modern diesel engines tax the coolant pretty bad as well. Not from the perspective of cooling itself, but I read an interesting article a few years back that explained how the cylinder pressures that are being created on these things are expanding and contracting the cylinder walls with each firing. This rapid expansion and contraction creates cavitation of the coolant on the surface of the water jacket side. If the additives in the coolant that help prevent this cavitation get used up then you subject the blocks to erosion. Leading to problems down the road.
CP4 replacement is on my radar too.
I think a 12v gear motor on a switch with oil being pumped from the pan into one of the oil ports would prime the 2.5 qts pretty quick.
so .proceed with caution if you replace the oem plastic filters which do not rust with metal can filters which could rust.
in my mind..this would not be a move in the direction of reliability.













