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post #1 of 45 Old 05-26-2018 Thread Starter
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TDi: Any interest in a 1 micron fuel filter

Any interest in a 1 micron fuel filter assembly that would replace the factory fuel filter head/ filter with a new one that uses a 1 micron fuel filter?

Prices would be around $150 for the complete assembly with a 1 micron filter.

Extra filters would be around $40-45.

The filters are rated for ~100,000 miles, but it may not be a bad idea to change every 50k or so IMHO

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post #2 of 45 Old 06-02-2018
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I am adding a MANN Preline Filter system in mine. It's being placed before the factory filter. 1 micron is too small in my opinion. I think factory is around 5+/- Micron (not really sure since MANN and others do not post microns for filters). Preline is around 10 micron which is good for a pre-filter. There are different micron filters and functions but it also removes water. OEM removes water too but not as easily as the preline filters do.

100K miles on a 1 micron filter is not a good idea neither is 50K miles. The filter for me is only in-case I fill up at a regular gas station. Normally I fill up at stations that have 20-30micron filters on their fuel pumps. I have a card with Pacific Pride network, they filter all their diesel fuel.



I went with MANN because they are OEM. It has a multigrade filter and it well made. I have not got it in yet from Germany but should be in in a week or so.

Again my main reason to add this is it only takes 1 table spoon of debris to clog a filter and although I have never had anything in my fuel filter canister, I am not taking a chance on it with a regular gas station who may not or typically does not take care of their tanks or pumps. I think a 1 micron for a main is not a good idea. It might be ok for after filter from the main OEM filter but even then 1 micron will clog quickly. lowest I would go for an after filter from MAIN is 5 microns.

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post #3 of 45 Old 06-02-2018 Thread Starter
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Quote:
Originally Posted by alfissimo View Post
I am adding a MANN Preline Filter system in mine. It's being placed before the factory filter. 1 micron is too small in my opinion. I think factory is around 5+/- Micron (not really sure since MANN and others do not post microns for filters). Preline is around 10 micron which is good for a pre-filter. There are different micron filters and functions but it also removes water. OEM removes water too but not as easily as the preline filters do.

100K miles on a 1 micron filter is not a good idea neither is 50K miles. The filter for me is only in-case I fill up at a regular gas station. Normally I fill up at stations that have 20-30micron filters on their fuel pumps. I have a card with Pacific Pride network, they filter all their diesel fuel.



I went with MANN because they are OEM. It has a multigrade filter and it well made. I have not got it in yet from Germany but should be in in a week or so.

Again my main reason to add this is it only takes 1 table spoon of debris to clog a filter and although I have never had anything in my fuel filter canister, I am not taking a chance on it with a regular gas station who may not or typically does not take care of their tanks or pumps. I think a 1 micron for a main is not a good idea. It might be ok for after filter from the main OEM filter but even then 1 micron will clog quickly. lowest I would go for an after filter from MAIN is 5 microns.
Thank you for your opinion, but I respectfully disagree, especially since you don't know what filter I am talking about and it's filter capabilities.

IMHO you can get small enough for a main filter ( i could quote a bunch of different sources for my reasoning, but this one sums its up, as does the paper in this link)
"fuel system performance.

It must be extremely precise in terms of quantity, distribution and timing. Ball seat valves are sealed with balls that are only 1mm in diameter. A good seal is absolutely necessary for proper injection. Damage from erosive wear, such as shown below, will cause over fueling, leading to decreased fuel efficiency and eventually shut you down altogether.

hpcr injector damaged by hard particulate(3) high-pressure-fuel-system-wear
Pump performance can also be compromised by scoring and abrasive wear. These issues are magnified by the tighter tolerances and extreme pressures in HPCR engines. In these circumstances, it is the smallest particles (1-5 microns in size)
that cause the most damage, virtually sand blasting part surfaces."

https://www.stle.org/images/pdf/STLE...ontaminant.pdf

Seeing how many many Duramax (including myself), Cummins, and even Powerstroke people have been running this same filter or the slightly smaller 2 micron Cat filter on their trucks for years and some going by the recommended 100,000 mile change interval I don't see where your reasoning comes in.

The fuel injectors are typically have clearance tolerances in the 1 micron level, so obviously it wouldn't take much to start abrading the ball seat in the injectors, not to mention how teeny tiny the injector orifices are again it would take much to clog one up

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post #4 of 45 Old 06-02-2018
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Ok.

Not really my opinion more so what I have gathered over the years of research. All I was stating is what I was doing. No need to get snarky! 1 micron is 1 micron so brand does not matter much. Racor, Niktane (which I assume your talking about) and others make them. Not anything foreign here. I have done the research and have taken a few classes on this stuff at the overland expo here in Flagstaff 3 years in a row. I'd prefer to have 2 filters vs one filter at 1 micron and make sure to buy diesel from stations with filters on pumps. Like I said, 1 tablespoon of debris can clog a OEM filter. With a high pressure fuel system, I'd rather keep the OEM @10m+/- with a lower micron or similar to OEM m after. I'd do the primary and a 1 micron after. Don't forget 10m can filter out 1 micron particles. That all said, really the water removal is whats crucial here. That is what kills the pumps and injectors. I could go on but I can tell that it won't go anywhere. I'd also like to know who funded the study you supplied? Anyway, I can see a 1 micron used in tandem with OEM as an after filter but not as a main filter. Good luck.

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post #5 of 45 Old 06-02-2018 Thread Starter
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Quote:
Originally Posted by alfissimo View Post
Ok.

Not really my opinion more so what I have gathered over the years of research. All I was stating is what I was doing. No need to get snarky! 1 micron is 1 micron so brand does not matter much. Racor, Niktane (which I assume your talking about) and others make them. Not anything foreign here. I have done the research and have taken a few classes on this stuff at the overland expo here in Flagstaff 3 years in a row. I'd prefer to have 2 filters vs one filter at 1 micron and make sure to buy diesel from stations with filters on pumps. Like I said, 1 tablespoon of debris can clog a OEM filter. With a high pressure fuel system, I'd rather keep the OEM @10m+/- with a lower micron or similar to OEM m after. I'd do the primary and a 1 micron after. I could go on but I can tell that it won't go anywhere. I'd also like to know who funded the study you supplied? Anyway, I can see a 1 micron used in tandem with OEM as an after filter but not as a main filter. Good luck.
Sorry did not mean to come off as Snarky, hence why I said I respecfully disagree.

I do agree on that the ultimate system would be to have the factory filter in place, and the 1 micron filter afterwards, but I don't think that there is room in the engine bay for such a setup. So instead of that I am choosing to use the 1 micron exclusively and just replace the filter more.
I'd like to keep my diesel fuel as clean as possible since the injectors are expensive and a PITA to replace

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post #6 of 45 Old 06-02-2018
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Quote:
Originally Posted by yrktreg View Post
Sorry did not mean to come off as Snarky, hence why I said I respecfully disagree.

I do agree on that the ultimate system would be to have the factory filter in place, and the 1 micron filter afterwards, but I don't think that there is room in the engine bay for such a setup. So instead of that I am choosing to use the 1 micron exclusively and just replace the filter more.
I'd like to keep my diesel fuel as clean as possible since the injectors are expensive and a PITA to replace
There is room. Another member is using a fuel manager system in tandem with the OEM filter. That's the way to do it. They do this a lot in Australia, using a 30m pre and then OEM primary or OEM and 5m after. I have contacted about 5 specialist there about this as as well as 2 in Germany. Conclusion I have found is Keep the OEM primary and run a pre or after filter. 1m filter as primary could be an issue. I would not worry about the injectors. Those are cheap compared to a HPFP and the complete fuel system being destroyed by a clogged filter. If OEM thought a 1 micron would suffice they would have used one. I believe OEM is <10m. Even using regular stations in the past has never clogged a filter nor have I found particles in canister but fuel is dirty and filter is dirty after 10K miles when I change my filter. I change it between 8-10K miles. Cheaper insurance than paying $8K for a new fuel system. Also do you know the flow rates of the filter you are using?

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post #7 of 45 Old 06-02-2018 Thread Starter
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Quote:
Originally Posted by alfissimo View Post
There is room. Another member is using a fuel manager system in tandem with the OEM filter. That's the way to do it. They do this a lot in Australia, using a 30m pre and then OEM primary or OEM and 5m after. I have contacted about 5 specialist there about this as as well as 2 in Germany. Conclusion I have found is Keep the OEM primary and run a pre or after filter. 1m filter as primary could be an issue. I would not worry about the injectors. Those are cheap compared to a HPFP and the complete fuel system being destroyed by a clogged filter. If OEM thought a 1 micron would suffice they would have used one. I believe OEM is <10m. Even using regular stations in the past has never clogged a filter nor have I found particles in canister but fuel is dirty and filter is dirty after 10K miles when I change my filter. I change it between 8-10K miles. Cheaper insurance than paying $8K for a new fuel system. Also do you know the flow rates of the filter you are using?
I do have the specs on it, here you are sir
I will try and shoe horn this in with the factory setup, thanks for the tip

Up to 25 gpm (94.6 lpm) maximum flow
50 psi (3.4 bar) maximum working pressure
Various micron media(s) available
Microglass filters have a higher dirt-holding capacity for longer life
Filters are UL recognized for use in fuel dispensers

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post #8 of 45 Old 06-02-2018
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I chose preline 270. variable - 100-270 l/m (26 gpm-71.32 gpm)
Operating Pressure 4 Bar.
>93% water separation
ISO 19 438:2003
Also has heater option and water light indicator.

Oh and filters are $10 vs others that are $48+/-. Synthetic filtering materials and multigrade.

https://oe-products.mann-hummel.com/...PreLine_EN.pdf

https://www.mann-filter.com/fileadmi...EN_WEB_neu.pdf

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post #9 of 45 Old 06-02-2018 Thread Starter
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I like the heater option, would be good in the winter months

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post #10 of 45 Old 06-20-2018 Thread Starter
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After researching more and more about microglass fiters I can see why they have a 100,000 mile change interval.

They can hold many many more times the amounts of dirt than normal media fuel filters.

I am going to eliminate my original fuel filter and just run this 1 micron fuel filter.

I am very confident that it will do a great job, better that the factory media filter at filtering everything without a huge pressure drop.

As a matter of fact these filters are designed to be used on commercial fuel pumps as well. So you can just imagine how many gallons that they can filter before needing replacement.

Just some of the articles that I found:
http://www.kaydonfiltration.com/docs...-cellulose.pdf

http://baldwinfilters.com/literature...#39;s/09-1.pdf

http://www.emea.donaldson.com/fr/ih/...ary/037008.pdf

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