Here I am

Looking at adding fuel filter...

Attention: TDR Forum Junkies
To the point: Click this link and check out the Front Page News story(ies) where we are tracking the introduction of the 2025 Ram HD trucks.

Thanks, TDR Staff

Turn Signal malfunction

Rear freeze plug replacement

Status
Not open for further replies.
If I understand your question correctly, I can say that I have the stock, in-tank lift pump and the GDP filter mounted on the intake horn, and the Mopar Severe Duty Filter mounted under the frame (so total of 3 filters) and have had no issues at all with fueling.
 
The one on the filter is the problem, wrong place and it never really lasted as long as it could. The in-tank pumps are much better for longevity. Put a gauge at the CP-3 inlet and monitor it, when you start pulling it below 3 psi consistently it is time for an upgraded pump, that is the only way to definitively tell if LP delivery is lacking.

With stock fueling and OE parts, even thru extra filters, it is rare you can pull it under 5 psi with a good in-tank pump. With tuning the stock system is good for right at 500 HP max, naturally by that time it is out of fuel and air both but nothing gets driven that hard in normal usage anyway.
 
With stock fueling and OE parts, even thru extra filters, it is rare you can pull it under 5 psi with a good in-tank pump. With tuning the stock system is good for right at 500 HP max, naturally by that time it is out of fuel and air both but nothing gets driven that hard in normal usage anyway.

I agree. I am making 415 rwhp on the stock in-tank pump. I have 3 fuel filters and rarely dip below 6 psi WOT and even then I don't recall the last time it went below 5 psi. I monitor my pressure between the last filter and the CP3.
 
X3. Zero issue pushing through multiple filters. Verk, you were given incorrect information.
 
Last edited:
i have the kit that goes on the frame rail, and it gets well below 0 here, i've not had a gelling issue yet. treated diesel shouldn't have a problem.
 
Finally got around to adding a second (actually 3rd) filter, almost done. I added the OEM kit previously, but it has been pointed out that that is a prefilter/water separator... only getting the really big stuff. Seems best filter to use in the OEM Engine location is about 3 of 4 micron, and Expensive.. so I got a filter mount for a 3 micron Donaldson, and went looking for a place to install. Turns out I can piggy back on the frame rail mounted kit, and being that the OEM kit has a heater, it will cover both filters should I find myself somewhere cold. I made a bracket to bolt onto the kit bracket, this bracket holds the new filter base. I just finished mounting it, but have not yet connected the fuel lines. I also plan to add a fuel pressure gauge to the output, read in cab, and a second before filter local gauge for diagnostics, should help with determination of when a filter needs replacing, the new filter will have the tightest filtration, and expect it to fill up first. Here are a few pictures, I'll get on truck pictures when it's all connected. #ad
 
Last edited:
Finally got around to adding a second (actually 3rd) filter, almost done. I added the OEM kit previously, but it has been pointed out that that is a prefilter/water separator... only getting the really big stuff. Seems best filter to use in the OEM Engine location is about 3 of 4 micron, and Expensive.. so I got a filter mount for a 2 micron Donaldson, and went looking for a place to install. Turns out I can piggy back on the frame rail mounted kit, and being that the OEM kit has a heater, it will cover both filters should I find myself somewhere cold. I made a bracket to bolt onto the kit bracket, this bracket holds the new filter base. I just finished mounting it, but have not yet connected the fuel lines. I also plan to add a fuel pressure guage to the output, read in cab, and a second before filter local gauge for diagnostics, should help with determination of when a filter needs replacing, the new filter will have the tightest filtration, and expect it to fill up first. Here are a few pictures, I'll get on truck pictures when it's all connected.

The OEM 2nd filter kit is a pre-filter, but that's not a bad thing. It's still a 25µ filter which keeps the factory bowl filter just working on the smaller stuff, and then a 3µ after that to polish the fuel. Sequential filtering should result in cleaner fuel and longer filter life. That's also why you often see one under the cab, OEM, and one on the intake horn.

The Donaldson is likely a 3µ filter as that's the finest media right now. 2µ is a standard that was changed circa 2004.

The Fleetguard FF5814 is also a 3µ but, IMHO, has better media than the Donaldson thou I'll run a Donaldson if I can't get my hands on a FF5814.

Which Donaldson are you going to run?
 
The OEM 2nd filter kit is a pre-filter, but that's not a bad thing. It's still a 25µ filter which keeps the factory bowl filter just working on the smaller stuff, and then a 3µ after that to polish the fuel. Sequential filtering should result in cleaner fuel and longer filter life. That's also why you often see one under the cab, OEM, and one on the intake horn.

The Donaldson is likely a 3µ filter as that's the finest media right now. 2µ is a standard that was changed circa 2004.

The Fleetguard FF5814 is also a 3µ but, IMHO, has better media than the Donaldson thou I'll run a Donaldson if I can't get my hands on a FF5814.

Which Donaldson are you going to run?
I have the Donaldson P551313 secondary filter for the new filter base. I'll replace the engine mounted filter in the OEM location with the Donaldson P550908, that one is expensive and I plan not to replace it often as really shouldn't see anything after the new filter is in the system.

 
I'd certainly consider the Fleetguard FF5814 for next change, but the Donaldson P551313 is 3micron (I'll correct my prior post), and it is less than $14 on Amazon. The Fleetguard is about $31 at Genos (seems to be about the best deal on that filter).. Its still way cheaper than the OEM filter element, I expect once I'm done I'll mostly be replacing this filter, and the pre-filter. I'll be checking the other, but it really is unlikely it will see much past the first 2 filters. I'm not adding my additional after the OEM engine mounted unit, because of the Dual Alternator taking up that space (https://www.turbodieselregister.com/threads/258449-Dual-Alternator-install).. Besides, filter changes under the truck are actually much easier, and less mess as well.
 
Of course adding either choice is better then nothing, but IMO it is best to add the filters in a "cascading" order of size, which means a F/W separator and" larger micron "trash filter" on the frame, then keep the oem firewall mounted filter with a 5 mic filter media and add a GDP 2 mic filter just before the CP3 HP pump. This will allow the most efficient use of filters as well as result in your fuel being "polished" as it goes through the sequence multiple times. It is SOP in marine environments.
 
It is SOP in marine environments.

Pretty much SOP in anything EXCEPT the consumer LD market. The same engine in commercial platform gets MUCH better filtration by default.

The FleetGuard filter is one of the better WS filters in a combo, with a 3 um between it and the CP-3 you can run the updated fleet guard in the OE housing and be well protected. A good WS filter and a 10 um under the truck with the OE filter and the 3 um at the CP-3 is pretty much top of the line. The only addition to make it better is a fuel heater on the primary solids filter to keep the fuel flowing at maximum all the time.
 
My install is complete and working. Space under hood with the Dual alternators became too much a premium, and was not interested it removing the OEM filter, which now doesn't really do much, with a 3 micron filter before it inline. The OEM frame mount kit is a water/fuel separator and pre-filter. It has a water sensor, and heater. That then feeds the 3 micron filter and from there goes to the OEM filter. I have a mechanical gauge before the 3 micron, and will have an electrical in cab gauge monitor for the post filter pressure, from this I'll determine when to replace the filter. Here is what I did: https://www.turbodieselregister.com...cond-filter-to-OEM-frame-rail-fuel-filter-kiy
 
Last edited:
that's a good kit. i have two. one on each truck. even in the cold of Flagstaff, i've never had a gelled system, i also switched to Donaldson 553203.
 
So...I ended up going with this setup - http://dieselfuelfilterkits.com/03_1...ilter_kit.html
It was a clean install and I am happy with everything so far. Company is good to deal with and answered my questions quickly. I will post pics when I get a chance.
That is a nice looking kit, but a bit pricey. It doesn't have a fuel heater, nor water in fuel sensor. The advantage of that kit is it's ready to go.. the way I took took the OEM kit (Water/Fuel Separator prefilter), with heater, and WIF sensor, then a secondary fine filter. Also I measured I can even use the longer 10" CAT 749 filter, since the secondary it elevated above the OEM kit filter. I had less than $150 in my set up, but certainly more time. It's all what works best for your capabilities. Other than time, the down side of my set up is the OEM kit uses a more expensive filter.

 
I've had the Glacier setup on my truck for quite a few years (they used my truck to design the application) and I have no complaints with it. Everything is very robust and top quality. Nothing has corroded or gone bad in any way.

Scott
 
Status
Not open for further replies.
Back
Top