I have been doing some digging around and have been looking at the specs for my 6.4L SRT and it seems that the recommended engine oil is in fact
PENNZOIL ULTRA 0W-40........New Pennzoil UltraTM 0W-40 Designed For All SRT Vehicles
so I read the article and then proceed to look for the oil here in Australia (which I can't Fuc*ing find or buy).
Then I learn that Penzoil is really Shell Oil as I wanted to contact them (Penzoil) to ask about purchasing in Australia Contact Us - Pennzoil
and the URL of the specs gives it away as well..........http://www.epc
So I go to the Shell website and see if I can get a Synthetic Oil for my vehicle from them and there is no product that I can find that meets or exceeds the MS - 12633 even though Penzoil is Shell and Shell is Penzoil.............ffs
QOUTE "Specifically formulated for the needs of Chrysler SRT engines where MS-
12633 is required. It may also be used in SRT engines originally
recommending Chrysler MS-10725" via this .pdf http://www.moparinternational.com/as..._19Dec2014.pdf
Shell search for oil is bull shite as it does not list Jeep GC at all only Chrysler see attached .pdf
Mobil is next
Mobil 1 0W-40 Mobil 1â„¢ 0W-40
Does not state approved for my engine at all.
Castrol, Nulon, Penrite all the same as Mobil all say they are the greatest but none stating they meet or exceed the needs of Chrysler SRT engines where MS- 12633 as required
The only oil company I found today.......that openly states it meets the Chrysler MS-12633, MS-10725, MS-10850 standard.................and I'm sick of looking TOO is
AMSOIL - Signature Series 0W-40 Synthetic Motor Oil
2015 JEEP GRAND CHEROKEE 6.4L 8-cyl Engine Code [J] ESG from their US site: AMSOIL Online Product Application Guide
It's also sold in Australia here: http://enginecare.com.au/product-cat...nts/motor-oil/
VIN DECODER IF YOU NEED IT: Jeep Grand Cherokee WK2 - 2011-up Grand Cherokee VIN decoding
Hopefully some oil engineer will correct me and say that there are many choices out there that I can use in my engine today...(these days).....all he or she has to do is prove in writing IS that whatever engine oil he or she suggests meets or exceeds the Chrysler MS-12633, MS-10725 standard.
I didn't stuff myself around to find the cheapest engine oil for my vehicle either, I want the right oil is all, I simply want my oil to meet or exceed the standard.
What do the dealers use? Does anyone work for a dealer here? Give us some insight please.
Really sorry if this has been posted/asked before as I did search and there were heaps of hits to my search.