Unfortunately they will recommend the MO-339 (smaller filter which all of these new vehicles are coming with from the factory).
I just went through this yesterday at the dealer where the service manager is a good friend of mine for years and their service department has really been excellent to me.
I have several Jeeps all V8’s and they have been servicing my 2011 JGC Limited 5.7L since I bought new which now has 220,000 plus and runs like a champ - All Original - Amazing Vehicle.
So here is what I was shown on the service managers computer for all of my vehicles:
2011 WK JGC 5.7L - Filter MO-899 with 5W - 20 Synthetic Blend - This has been since day one when I bought it and continues to be the recommended service.
2022 WL JGC 5.7L - Filter MO-339 with 0W-20 Full Synthetic
2023 20A 392 Wrangler - Filter MO-339 with 0W-40 Full Synthetic
I had the 2011 and 2022 Grand Cherokee’s serviced yesterday - I requested they install the MO-899 on the 2022 WL and they said I would need to sign a waiver and if there were any issues Stellantis would most likely void my warranty - My service manager told me not to do it especially since I change my oil religiously in all of my vehicles at 3000 miles or every six months with the 392 since to date it has not been driven enough to come close to 3000 in six months.
In summary we discussed all of this in detail yesterday and it’s simply Stellantis that is specifying and more or less mandating the use of the MO-339 on many of their vehicles simply because it’s “cheaper” and easier for them and not in the best interest on any specific vehicles - Shame on Stellantis especially with the 392 which is basically the SRT and should have the larger SRT filter - Period!
The 5.7L Hemi in the 2011 JGC is basically the same Hemi engine as the 2022 WL - Stellantis changed the oil spec and filter spec on the 2022 and continue the original oil spec and larger filter spec on the 2011 which is all noted on my service tickets.
Personally, I believe the 2022 5.7L should definitely have the MO-899 Oil Filter and the 392 should have the MO-899 at a MINIMUM.
FOR NOW, I am sticking with the factory specs simply to comply with warranty.
BTW - I hate the LITTLE Filter MO-399 on these large V8’s and believe they are inappropriate for these size engines - Especially long term. Another case of bean counters and corporate greed in my book.
Sorry for the long winded post however maybe it wil be helpful to others