Originally Posted By: BoiseRob
Straight from the current Jeep Grand Cherokee Diesel Supplement, 3rd Edition...
We recommend you use 5W-40 synthetic engine oil such
as MOPAR or Shell Rotella that meets FCA Material
Standard MS-10902 and the API CJ-4 or ACEA E9/E7 or
ACEA A3/B4 engine oil category is required.
I have been told by a Jeep Service Writer that FCA MS-10902 is the same as the Cummins CES-20086.
The question is, does API-CK4 meet either of the two ACEA specs?
ACEA are European specs. API CJ-4 is an American spec and yes, CK-4 meets an CJ-4 specs. Also notice that it needs to meet API CJ-4 OR ACEA E9 OR ACEA A3/B4. Once you meet the American spec, no one cares about the European spec.
But here is the full meal deal on what specs Shell Rotella T-6 meets. It's from the Rotella website Rotella.com (I hope I don't get Carpal Tunnel.)
API CK-4, CJ-4, CI-4 Plus, CI4, CH4
ACEA E9, Jaso DH-2, Cummings CES 20086, Volvo VDS-4.5, Detroit Fluid Specification (DFS) 93K222, Caterpillar ECF-2/ ECF-3, MAN M3575, JASO MA/MA2, Allison TES 439, MB- Approval 22831.