HTHS of Rotella 10w30

BigJohn · May 9, 2021

I would like to know the HTHS of both.....

Rotella T4 10w30

and

Rotella T5 10w30

Does anyone have this info or know where I can get it?

.......

Kuato · May 9, 2021

Plenty of references here on the site, consensus has been that Shell doesn't publish it.

BigJohn · May 9, 2021

Kuato said:
Plenty of references here on the site, consensus has been that Shell doesn't publish it.

Is it fair to assume that both are better than 3.5?

oggb · May 9, 2021

BigJohn said:
Is it fair to assume that both are better than 3.5?

Going to resurrect a nearly 10 year old @Quattro Pete quote in regards to T5 here:

The 10w-30 and 10w-40 grades meet MB 228.31 spec, so HTHS has to be at least 3.5.

Bighorn2500 · May 10, 2021

If you email them, they will tell you. I did when the T6 15w40 came out.

Gokhan · May 11, 2021

Practically all 10W-30 HDEOs have HTHS = 3.5 cP.

blufeb95 · May 12, 2021

I believe CK-4 requires all 10w30 oils to have an HTHS above 3.5.

CleverUserName · May 12, 2021

Aren’t all HD 10w30s @ 3.6 ? I’ve never seen one that’s wasn’t 3.6.