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Bypass filters and oil selection

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#1 Diesel vs blended

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I have a 2001.5 and I installed an OilMaster (at the time) bypass filter. It has changed names to become OilGuard and now I see something about ecomicrofilters involved with this unit now days. I originally bought a box of filters and still have 4 or so left. I got to looking into this and the filter model now is EPS-20F for basically the 4 inch tall and diameter filter. The prices of these filters seems to have gone through the roof? Whats up with that these days? However, I am very satisfied over the years with this filter unit and was having blackstone labs testing my oil on many occasions to which I had a report come in from them on a 10,000 mile oil change interval that was very favorable. I run the lubrication engineers LE8800 oil, that I buy from them in the 5 gallon pail and change the bypass filter and my service interval is 10,000 miles. Now days I dont drive it that much, so I go a while and just change it anyway. But what is the story on this bypass filter now days and the price of these filters?
 
I relocated my oil filter under the passenger floorboard along with a bypass filter. I use the Stratapore filter along with an Amsoil bypass EB100. I due 10k or once a year. Haven't done testing on oil. I know this setup wasn't needed on a 2014, but I had components when I acquired the truck and liked the extra oil capacity and cooling ability! Can't speak about OilMaster filters but from what I've seen, could run dual Stratapores with similar results since bypass only gets about 10% flow.
 
I used to change my 98 12V at 10k using AMZ/OIL 15-40 Diesel Marine with StrataPore filter. Blackstone told me I could go longer.

My Son Runs same oil and AMZ/OIL filter 20k on his 15 and Blackstone says go longer.
 
I run a Stratopore Fleetguard LF3894 as my main filter, I have a few left. They seem to have quit making that model filter, so someday I will have to decide on which other one to switch over to.


I have a 2001.5 and I installed an OilMaster (at the time) bypass filter. It has changed names to become OilGuard and now I see something about ecomicrofilters involved with this unit now days. I originally bought a box of filters and still have 4 or so left. I got to looking into this and the filter model now is EPS-20F for basically the 4 inch tall and diameter filter. The prices of these filters seems to have gone through the roof? Whats up with that these days? However, I am very satisfied over the years with this filter unit and was having blackstone labs testing my oil on many occasions to which I had a report come in from them on a 10,000 mile oil change interval that was very favorable. I run the lubrication engineers LE8800 oil, that I buy from them in the 5 gallon pail and change the bypass filter and my service interval is 10,000 miles. Now days I dont drive it that much, so I go a while and just change it anyway. But what is the story on this bypass filter now days and the price of these filters?
 
The Donaldson DBL7349 is the best full flow oil filter made for these motors.


Well I can say if available the AMZ/OIL filter is just as good, maybe better???

They sure are not exactly the same as I once thought.

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Same media, or at least it used to be. The fan has always been slightly different.

Donaldson publishes 99% at 15um. The EaO80 now advertises 99% at 20um.
 
Great info coming in on this post. Now let me suggest that before becoming too entrenched on some make of filter, take a used one and cut it apart and see how it's built. Check the quality of the overpressure release inside the filter, is it good quality spring or just bent sheet metal acting like a spring, and filter endcaps are they quality metal or something else. Some filters may not even have an overpressure release bypass built in, in event the media becomes clogged.
 
These motors don’t use a clogged filter bypass in the filter since the bypass is built into the filter head. If the filter has an internal bypass it’s not really built for this motor.

Speaking of specs, did you know that the Fleetguard filters not are rated for the same flow the oil pump is? Really surprised me, but it’s one of several reasons I run the Donaldson.
 
Glad I saw this thread!!! Last time a bought a Donaldson it was a black filter w/ p/n ELF7349 or one that on a '94 5.9
 
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