RP 20-820 are gone, what do I do now?

corneileous

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The hemi was reworked in 2009 which added the eagle heads and VVT and possibly some other stuff (MDS was there since 2006). But after 2009 there was only one mechanical change to upgraded lifters somewhere around 2014 or 2016, can't remember.
So did, or at some point, the variable valve timing replace the multi displacement system? Ever since I’ve had my 2018, Ive always wondered why the Eco mode(whatever it is now) in these trucks doesn’t seem to really affect the louder Carven Progressive exhaust note on it like the MDS did so badly to the flow master knock off and custom dual muffler-back pipes on my 2008. That’s why I’ve always been really glad that I had the ability to easily run a tuner on my old truck and don’t have to on this one.

I don’t know whether or not if you’ve been on the BITOG forums but that really talkative guy that’s on there; can’t remember his username but he’s the one that has the Maverick-like fighter pilot helmet as his avatar and he was the one telling me about the lifters being changed supposedly 4 to 5 times throughout the years.
But after that date, the same hemi is used in 4th gens (built after that date) and classics, as well as 5th gens.

So your 4th gen 2018 Ram has the same hemi as my 5th gen 2019. But your 2008 hemi will be quite different.
So other than the heads, the lifters and whether or not there was a transition from the multi displacement system to the variable valve timing, what else is not the same?
 

Wild one

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The hemi was reworked in 2009 which added the eagle heads and VVT and possibly some other stuff (MDS was there since 2006). But after 2009 there was only one mechanical change to upgraded lifters somewhere around 2014 or 2016, can't remember.

But after that date, the same hemi is used in 4th gens (built after that date) and classics, as well as 5th gens.

So your 4th gen 2018 Ram has the same hemi as my 5th gen 2019. But your 2008 hemi will be quite different.
The cam tunnel was raised to accomodate the extra oil passge for the VVT system,putting the cam even farther away from the crank and it's splash lifter lubrication.
 

corneileous

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This is what I mean - Mobil / Exxon Marketers have gone insane. Just schlepping statements and re-brands all over the place, thinking confusing customers means more sales, somehow.

As for me, it just pi$$es me of off.
After reading this it kinda makes me a little bit more anxious to see the Blackstone results from the Schaeffers 9000 after I change my oil and send off the sample. I might be sticking with that in the future.
 

Black1500Ram

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They musta did something different because whatever they did doesn’t really affect my exhaust note.
musta cause i have a carven progressive too and MDS is super noticable to me.
Also have a 1/4 wave resonator - you gotta get one if you don't have!!
 

Wild one

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They musta did something different because whatever they did doesn’t really affect my exhaust note.
VVT and MDS has been on every Ram 1500 5.7 and the automatic cars with the 5.7 since 2009. The manual /stick 5.7/6.4 Challengers don't have MDS and the HD 2500's with the 5.7 didn't get MDS until either 13 or 14 .
 
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Dusty

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Googled it, I wanted to see if they had improved them since I last check on them backpack in 2010
A rating of 35 microns would be unusual for a spin-on oil filter nowadays, so I did some research. The only reference to this number I could find was in a discussion regarding oil filters for the Cummins motors by "Deluth Diesel" in 2010 at:

Mopar oil filters | Dodge Cummins Diesel Forum (cumminsforum.com)

Additional research uncovered a discussion of the MO-899 filter in: https://www.ram-trx.com/threads/15-trx-oil-filters-cut-compared.9481/

Here there is a list of the MO-899 and corresponding competitors, and specifically shows the MO-899 efficiency of 94% at 20 microns, which was oddly enough reported in an Amsoil test. While the MO-899 is not going to place near the top of efficiency with 94% @ 20 microns, without any evidence to the contrary I seriously doubt it will pass much 35 micron particles, if at all.

There is also a video on the construction of the MO-339 and the filter media does not look like cellulose paper, but perhaps a blend (https://youtu.be/_lZWX25RuuE ).

Regards,
Dusty
2019 Ram 1500 Billet Silver Quad Cab 2WD, 5.7 Hemi, 8HP75, 3.21 axle, 33-gallon fuel tank, factory dual exhaust, 18” wheels. Build date: 3 June 2018. Now at 75878 miles
 

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HEMIMANN

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@Dusty - thanks for posting the chart, that's the type of thing I like to see...except it's 12 years old and we don't know where those numbers came from.

The marketers today typically try to hide performance data to the extent possible, except when they have something they think is a competitive advantage, which today it's more about highest profit and lowest cost. Been there, done that.

There is science out there to indicate spun fiber filters can be made more efficient with less flow resistance than matted media. I saw this way back during Fleetguard's introduction of Stratpore spun fiberglass filters.

This is why pleat count alone isn't necessarily a terrific measure anymore. Nor surface area. A spun glass media can hold more dirt and flow more easily than a matted media with the same surface area.

The only way to know for sure is competitive testing, such as the Arizona dust ingestion test used for air filters (applied to oil filters).

Without further data, that still leads me to Royal Purple 1st, and Fram Ultra 2nd, based on these being the top 2 efficiency filters in actual test data presented earlier in the thread. Again, this is only critical for drama engines like the Hemi that need squeaky clean oil to prevent flow issues (due to marginal lubrication system).
 
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