The Rotella Is Being Reformulated -Zinc
Baja
Joined: Aug 2013
Posts: 5,845
Likes: 368
From: Near Bordeaux, France
FWIW - if you are an amazon-er, which I am, they have a subscribe and save special on rotella T6 right now. Yes, the full syn sticky icky good stuff.
I get 1 gallon a month delivered to my door for $18.35. I use them for a lot of other household consumables, but that is by far the best deal I have ever found. You get a 15% discount after a few subscriptions.
I run it in my rover, my diesels, and even my race-built Ducati. They all love it.
I get 1 gallon a month delivered to my door for $18.35. I use them for a lot of other household consumables, but that is by far the best deal I have ever found. You get a 15% discount after a few subscriptions.
I run it in my rover, my diesels, and even my race-built Ducati. They all love it.
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Pro Wrench
Joined: Apr 2015
Posts: 1,387
Likes: 111
From: Dallas, TX
I'm nearing the completion of my 3-week saga a-la top-end rebuild, etc. and rolled the dice on the T4 reformulation. Will let you all know if it seizes up or the camshaft fails to shake hands with lifters.
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Pro Wrench
Joined: Apr 2015
Posts: 1,387
Likes: 111
From: Dallas, TX
I didn't replace the camshaft. I did remove the lifters and rods. R&R the lifters as there was absolutely zero plunging action. Everything went back where it came from minus a possible left/right side swap on one row. I'm paranoid that they won't work anymore LOL
Pro Wrench
Joined: May 2016
Posts: 1,617
Likes: 184
From: Lake Tahoe
I did do a little more research into the oil specs. The old formulation is CJ-4 and the new one is CK-4. CK-4 appears to allow for similar levels of zinc, but its not required. Also, for a few months Shell has been selling the new T4 with the old CJ-4 spec, apparently because the new spec did not go into effect until 12/1/2016. At which point, the formulation may change slightly yet again once the T4 bottles with the CK-4 spec arrive on the shelves. There's also a rumor that Ford wasn't happy with Shells new formula, and they are working together to slightly change it.
Not very useful info, but it's all I can come up with for now.
Not very useful info, but it's all I can come up with for now.
Pro Wrench
Joined: May 2016
Posts: 1,617
Likes: 184
From: Lake Tahoe
Hear hear on the paranoia... I've had many sleepless nights over this rebuild, being it my first one ever. And if you look at my post history, it was only in May/June of last year that I was super worried / might pay a mechanic to install a new driveshaft because I wasn't sure I could do it. Things have changed a bit thats for sure.
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Pro Wrench
Joined: Apr 2015
Posts: 1,387
Likes: 111
From: Dallas, TX
I did do a little more research into the oil specs. The old formulation is CJ-4 and the new one is CK-4. CK-4 appears to allow for similar levels of zinc, but its not required. Also, for a few months Shell has been selling the new T4 with the old CJ-4 spec, apparently because the new spec did not go into effect until 12/1/2016. At which point, the formulation may change slightly yet again once the T4 bottles with the CK-4 spec arrive on the shelves. There's also a rumor that Ford wasn't happy with Shells new formula, and they are working together to slightly change it.
Not very useful info, but it's all I can come up with for now.
Not very useful info, but it's all I can come up with for now.
the way I approached the new blend is that the T-6 still has high level of zinc. there was no reason to lower the zinc in the T-4 blend in any place. From what I have read, HD diesel applications are not held to the same standard as the 5/10Ws, as diesel engines do require more substantial amount of those heavy phosphates. definitely no reason to lower it drastically, especially for those consumers who have used this product indefinitely and would be unsuspecting of any reformulation.
Pro Wrench
Joined: May 2016
Posts: 1,617
Likes: 184
From: Lake Tahoe
the way I approached the new blend is that the T-6 still has high level of zinc. there was no reason to lower the zinc in the T-4 blend in any place. From what I have read, HD diesel applications are not held to the same standard as the 5/10Ws, as diesel engines do require more substantial amount of those heavy phosphates. definitely no reason to lower it drastically.
Thread Starter
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Pro Wrench
Joined: Apr 2015
Posts: 1,387
Likes: 111
From: Dallas, TX
Hear hear on the paranoia... I've had many sleepless nights over this rebuild, being it my first one ever. And if you look at my post history, it was only in May/June of last year that I was super worried / might pay a mechanic to install a new driveshaft because I wasn't sure I could do it. Things have changed a bit thats for sure.
the LR/Indy techs here in Dallas charge minimum $100/HR. Then stiff you with genuine parts marked up another 100%. I have no choice BUT to do my own wrenching and parts sourcing. m*th#r f*ck@rs
Pro Wrench
Joined: May 2016
Posts: 1,617
Likes: 184
From: Lake Tahoe
Checked bob the oil guy today and was happy to see a VOA done on the 10w30 T4 ck-4. I suspect 15w40 will be pretty much the same.
https://bobistheoilguy.com/forums/ub...30#Post4304492
Verdict:
https://bobistheoilguy.com/forums/ub...30#Post4304492
Verdict:
