RP 10-48 Oil Filter

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RoadKing

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Amazon use to say the RP 10-48 Oil Filter fit my 16 and 20 Ram 5.7 Big Horn but now it says it does not fit my 22 5.7 Big Horn. Figure Amazon is just wrong but maybe there really was a change.

Anyone know?

Thank you.
 

Burla

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Amazon fitament just isnt to date, use RP fitament. But, 10-48 really shouldnt be used anyhow, that size has been known to throw codes and that cousin filter the amsoil has a service bulletin out for oil pressure. 20-820 fits every 5.7, 20-500 fits most, both of those are RP, and fram ultra 2 also fits all 5.7 rams to date. Ram just went to a smaller filter because they tightened up that area, with no thought or belief it could cause issues, but it does in some rams. The larger filters have never thrown a code recorded here in oil filter thread.
 
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RoadKing

RoadKing

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Been using the 10-40 since my 2016 Ram. I am not really sure if they changed some to the 2022 Ram to make the 10-48 not a good choice any more
 

Burla

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The fact you were using it with no codes doesnt really mean it was the best choice, it is in fact more restrictive then the 20-820 and has less media to filter. If it works for you congrats, I am just passing along the info that comes from a decade of info from ram forum, and it helps other people searching for this info.
 

NETim

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The RP fitment page says to use the 10-48 for my '14.

How do I know if the 20-500 will fit my truck? Trial and error?
 
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RoadKing

RoadKing

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I believe you. But the RP web site says to use the 10-48 filter not the 20-820.

The 20-820 just looks to be a little taller. So folks on the forum just figured out the 20-820 is a better choice since it has more filter material?

Thank you
 

Burla

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The RP fitment page says to use the 10-48 for my '14.

How do I know if the 20-500 will fit my truck? Trial and error?
yup, trial and error on the 20-500.
 

Burla

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I believe you. But the RP web site says to use the 10-48 filter not the 20-820.

The 20-820 just looks to be a little taller. So folks on the forum just figured out the 20-820 is a better choice since it has more filter material?

Thank you
Amsoils distribution and control is more then RP's, if RP is getting complaints about codes they are indeed ignoring them. Even amsoil's service bulletin is "soft" as in they say most of their filters dont throw a code, but out of an abundance of caution they don't recommend the 10-48 version of their filter. Here is the info from bobs.

Notice the bulletin only covers the years when they went to the 10-48 version of amsoils filters, amsoil also had no issues with their 20-820 cousin filter, even though their version of that has 2 less holes. The larger filters are forgiving.

There were cross reference sites but the largest one was taken down that showed alternate filters for every application, they had the 20-820 and 20-500 as the only two rp filters that were alternatives to the 10-48, sadly in the recent troubling times oilfilter data is no more, but I believe there are some other sites out there, that was just the one I used. I have no more to ad, if 10-48 is working for you and you want to stay pat, as written by amsoil most likely you will be fine. There are just many of us here to have tried everything to address known hemi issues, oil pressure being one of them, especially at idle.
 
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RoadKing

RoadKing

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I just bought this used 2022 a few months ago. I’ve always used 10-48 on my 13 16, and 20. Not sure what is on there now. But i want to be smart on filter choice. Sounds like the 20-500 is a better choice than the 10-48.
 

Burla

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If it fits, I believe it is far better from what guys here say, some are even picking it over the 20-820 as it is thinner, the issue is length, so go under there and see how much length you have, and just buy one in case. 20-820's are crazy popular, they have been out of stock everywhere for a year or better. And read the oil filter thread page 1 and page 93 simple, the fram xg2 is another top choice. This filter below is the cousin filter to the 10-48. peace burla

AMSOIL EA15K50 Oil Filter Temporarily Not Recommended for Select Ram and GM Applications​

March 4, 2021 - Announcement


AMSOIL EA15K50 Oil Filter Temporarily Not Recommended for Select Ram and GM Applications
We are no longer recommending the AMSOIL EA15K50 Oil Filter for 2007-2013 GM vehicles with the 5.3L engine and 2013-current Ram vehicles with the 5.7L or 6.4L engines. There is no cause for alarm if you or one of your customers is using the EA15K50 Filter with one of the listed vehicles; we are acting out of an abundance of caution. We have sold thousands of AMSOIL EA15K50 Oil Filters to customers with one of the GM or Ram engines listed above. A very small percentage of those customers have reported gauges or check-engine lights indicating slightly lower than normal oil pressure.

Our industry-leading high-efficiency media removes more particles of smaller sizes than most competing filters to better prevent engine wear. In the GM and Ram applications listed, the EA15K50 Filter is capturing a large number of deposits and reaching its holding capacity before the end of its recommended service life in a small number of instances. This can result in reduced flow and overall oil pressure, but in no way harms the engine. AMSOIL Oil Filters include a bypass relief valve to ensure appropriate oil volume is always delivered to critical components.

...
 

Burla

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Now, blaming the truck is a little much for me, clearly it is a restriction issue, in order to make that bold statement they would have gotten all the old filters and cut them open, I call BS. It may be oil viscosity plus a restrictive filter, that would explain why some rams throw a code and some don't, but I have cut open untold number of filters in my life and not once have I ever noticed that much contamination plugging a filter, that would be a more rare event then the phenomenon with ram cel's for oil psi.
 

PaleFlyer

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Amazon fitament just isnt to date, use RP fitament. But, 10-48 really shouldnt be used anyhow, that size has been known to throw codes and that cousin filter the amsoil has a service bulletin out for oil pressure. 20-820 fits every 5.7, 20-500 fits most, both of those are RP, and fram ultra 2 also fits all 5.7 rams to date. Ram just went to a smaller filter because they tightened up that area, with no thought or belief it could cause issues, but it does in some rams. The larger filters have never thrown a code recorded here in oil filter thread.
RP says the 10-48 is the ONLY filter for the 18 5.7 1500.

And I actually am inclined to agree, as the 20-500 doesn't actually fit a 4x4 Rebel. There was a hammer and a long screwdriver required to remove the -500 last time, as it was jammed between the bottom of the threads and the top of the transfer case.

The 4x4 is probably why the spec is the tiny 10-48, versus the 20-500/20-820
 

GsRAM

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Not sure if its the different xfer cases across models, however both 20.820 and 20.500(what im running now because the 820 was out of stock in April when i did the annual service) fit my 2017 2500 4x4 with no issues. The 820 is a little tight, but no where near an issue to R&I.

Just my .02
 
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