Duramax Diesels Forum Truck of the Week
  #31  
Old 08-09-2017, 06:01 PM
FSUwelder1212 FSUwelder1212 is offline
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Originally Posted by BoiseRob View Post
DAVe3283, if you had read the post right above yours you would have seen where Shell will not "dual rate" Rotella except for one 5w30 with sulfur & phos <800 ppm.
Boise rob there is a thread on BITOG about Rotella T6 5w40 being dual rated, there is a lot of confusion but apparently shell has stated that Rotella T6 5w40 will be dual rated. I have some in the barn, I'll have to see what it says on the bottle tomorrow.
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  #32  
Old 08-09-2017, 08:43 PM
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THEFERMANATOR THEFERMANATOR is offline
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Originally Posted by DAVe3283 View Post
In addition to the Shell Rotella T6 that meets both CK-4 and SN, I saw this at the store the other day:
Attachment 46284
It claims to meet CK-4, CJ-4, and SN specs.

I am going to see if I can grab a couple drums of the old-school Delo 400 that was just CJ-4. Might be paranoia, but my built motor needs all the help it can get lol
Anything ck-4 rated is automatically cj-4 rated I believe due to the reverse compatibly standards from api. I hate saying it, but the motorcraft 15w40 is still just cj-4 and the old formula for now.
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  #33  
Old 08-09-2017, 09:20 PM
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DAVe3283 DAVe3283 is offline
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Originally Posted by THEFERMANATOR View Post
Anything ck-4 rated is automatically cj-4 rated I believe due to the reverse compatibly standards from api. I hate saying it, but the motorcraft 15w40 is still just cj-4 and the old formula for now.
I wasn't saying CK-4 isn't backwards compatible, I was merely showing an example of an oil that meets (or claims to meet) both the diesel CK-4 and the gasoline SN standard, which was postulated as impossible earlier.
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Originally Posted by BoiseRob View Post
DAVe3283, if you had read the post right above yours you would have seen where Shell will not "dual rate" Rotella except for one 5w30 with sulfur & phos <800 ppm.
I did read it, you literally quoted Shell saying it is both CK-4 and SN rated, but they will stop printing SN on it soon.

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Old 08-12-2017, 12:41 PM
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Originally Posted by DAVe3283 View Post
I wasn't saying CK-4 isn't backwards compatible, I was merely showing an example of an oil that meets (or claims to meet) both the diesel CK-4 and the gasoline SN standard, which was postulated as impossible earlier.
Ahh, gotcha. Thought you were refferring to the cj-4 rati,g on it. I was ignoring the part about SN since he had already proven himself false on it.
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