Unless I'm missing something...After using Shell Rotella oil's since the early 80's I just returned a case of Rotella of T-6 full synthetic for a case of Motorcraft oil for my 6.7 Powerstroke. Seems everything I could find said DO NOT put any oil in your 6.7 that Ford has not approved and Shell CK-4 T-6 isn't approved by them. These new Super Duty's cost way to much for me to think I know more than they do so I'm switching oil after 40 years of using Rotella oils.

There are two Rotella oils (and one other Shell oil) on this list that meet the new spec - both synthetic blends, I believe:PDF of approved oils.You'll need to scroll down to the 15W-40 section to find them.Rob

Sounds identical to the DEXOS scam that GM is running. Wife's Chevy Traverse requires "DEXOS" certified oil.I did a lot of research on DEXOS and discovered it is not really a "standard" but more of a Licensing Agreement whereby money goes into GM's pocket so an oil company can put the DEXOS APPROVED label on their oil. If you don't pay GM the licensing fee, you can't say your oil is "DEXOS" approved no matter how high of a standard it meets.All DEXOS approved oils I have seen BTW are either synthetic or semi-synthetic blends.But I get what the OP is saying; why give Ford an excuse to not honor a warranty!!

You can still find good synthetic CJ-4 oil for order. Saw this over on the FTE forums. I may be ordering it for my next change. I'm currently running T6 CK-4 in my old 7.3 with Archoil. This oil below meets Ford's WSS M2C171-E specs, which I believe is the spec through the 2016 MY.Triax Oil

I realize there are some 5 w 40 / 15 w 40 oils that Ford has approved but after using Shell in pickups and semis for so many years with nothing but great results it's hard to believe that todays Rotella T - 6 is not recommended by Ford..............This is a article I was reading about Fords oil info.Ford is recommending the use of a new Motorcraft diesel engine oil for its Super Duty trucks and warning fleet and commercial customers to avoid using most new CK-4 or FA-4 oils because they may cause damage to the engine, the company told AutomotiveFleet.com.Motocraft's WSS-M2C171-F1 formulation should be used in all Power Stroke diesels, especially the 6.7L that powers the F-250, F-350, and F-450, because it better protects the engine against high-mileage wear, according to the company. Ford had previously recommended CJ-4 formulations for its Super Duty trucks. On Dec. 1, the American Petroleum Institute began licensing the new CK-4 and FA-4 oils. CJ-4 oils will eventually be phased out.Commercial users should avoid the FA-4 formulation due to its low viscosity. CK-4 motor oils should be avoided because they provide "inadequate wear protection," according to a statement. The oil drain intervals remain unaffected, said Sherrice Gilsbach, a Ford spokesperson.The oil certification information is located on the back of the oil pouch in a circle known as the API donut.Customers shouldn't use oils labeled CK-4/SN unless they have been approved by Ford to meet WSS-M2C171-F1. This is possible with SAE 10W-40, 15W-40, 5W-40 and 0W-40 oils. SAE 10W-30 oils showing CK-4/SN cannot meet WSS-M2C171-F1.Motorcraft Super Duty diesel motor oil is formulated with premium hydroprocessed base oils and additive technology necessary to meet WSS-M2C171-F1. This new oil also meets the requirements of Cummins CES20086, Detroit Diesel 93K222, Volvo VDS-4.5 and Mack EOS-4.5, according to Ford.

All I can say is pretty much every major mfg of vehicles, equipment , motor sports toys has their namesake "reccomended" brand of oil, coolant, gear lube, etc. Yet the other thousands of name brand bottles of ________ flying off the shelves of every parts store seem suitable within their application range and vehicles aren't dying on the side of the road like they were poisoned!Maybe there's something to this Motorcraft oil thing or ...........

Good bye Shell Rotella | Good Sam Community

brooks379
Explorer
Sep 13, 2017
I might have to watch it again but I don't remember seeing anything where they were selling additives. What additives and oil were they selling ? I thought they were just warning people about the wear they were seeing in their test using the new CK-4
Learjet
Explorer
Sep 13, 2017
brooks379 wrote:
After watching the video that was posted a few pages back I hope they put something new in T - 6 because that clip sure showed a lot of wear on the parts they were testing. Maybe Shell picked up the tab for the FO MO CO CEO to go on an around the world trip with his family and WALLA T - 6 is approved. lol

do you mean the video produced by people who sell additives or their oil to fix the so called problem?
brooks379
Explorer
Sep 12, 2017
After watching the video that was posted a few pages back I hope they put something new in T - 6 because that clip sure showed a lot of wear on the parts they were testing. Maybe Shell picked up the tab for the FO MO CO CEO to go on an around the world trip with his family and WALLA T - 6 is approved. lol
taken
Explorer II
Sep 12, 2017
Here is the new statement from Shell.
taken
Explorer II
Sep 12, 2017
Send them an email. That is their response.
Lynnmor
Explorer
Sep 12, 2017
taken wrote:
It's now been confirmed by Shell that they changed nothing in their formula. Hmmm....

Where might we find that information from Shell?
Wishin
Explorer
Sep 12, 2017
Grit dog wrote:
Anyone who has any of this "bad" Rotella, please send it to me and I'll dispose of it properly!

LOL, no please send it to me!!!
taken
Explorer II
Sep 12, 2017
It's now been confirmed by Shell that they changed nothing in their formula. Hmmm....
brooks379
Explorer
Sep 12, 2017
Thanks for the link. I was looking for a little more info on what is making the difference now in Shell T - 6 oil. Last week it was not acceptable in a Powerstroke 6.7 and this week it is.
Grit_dog
Navigator
Sep 12, 2017
Anyone who has any of this "bad" Rotella, please send it to me and I'll dispose of it properly!