OFFRD
Thread starter
So yes, after 18 months we've finally discovered that the MS-12991 spec is in fact THE proper spec that Stellantis is using for the Gen 3 EcoDiesel engine.
The least expensive oil I've found to date that has this spec on the bottle is the Quaker State Ultimate Durability European 5W40, which is available right on the shelf at Walmart for $3.79/quart (5 quart jug).
The Ram owners manuals have been updated with the proper information for 2020+ model years, and the Shell Rotella mention has been removed.
The least expensive oil I've found to date that has this spec on the bottle is the Quaker State Ultimate Durability European 5W40, which is available right on the shelf at Walmart for $3.79/quart (5 quart jug).
The Ram owners manuals have been updated with the proper information for 2020+ model years, and the Shell Rotella mention has been removed.