Answer #23 concerning Noack

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Originally Posted By: Nyogtha
I got it wemay!


I knew you would, Nyogtha.
grin.gif
 
Per Savant Labs...

Quote:
In June 2015, General Motors published its GMW17332 Material
Specification, otherwise known as the dexos1™:2015
specification. The Technical Team at Savant Labs has thoroughly
reviewed the document with an eye to any changes in bench
testing. A high temperature high shear viscosity test at 100°C has
been added as a reporting requirement. Another change includes
reporting the kinematic viscosity at 100°C and the viscosity index
of the base oil mixture used to make the formulated engine oil. An
ASTM D5133 Gelation Index value of ≤ 12 has been added. While
the ASTM D5800 Noack Volatility limit remains ≤ 13.0%,
applicants are now required to report the average of three
consecutive runs at the same laboratory. Savant Labs offers all
the bench tests and can help you validate that your formulations
will meet the dexos1™:2015 requirements.
 
Originally Posted By: JHZR2
13%?!? Yuck.

For DI I'd love to see 6-7-% products. We know they have made them before.


That's just the max NOACK limit as defined by ASTM D5800.
 
Originally Posted By: JHZR2
13%?!? Yuck.

For DI I'd love to see 6-7-% products. We know they have made them before.

They don't make em' like that anymore.
 
Originally Posted By: Gokhan
Originally Posted By: JHZR2
13%?!? Yuck.

For DI I'd love to see 6-7-% products. We know they have made them before.

They don't make em' like that anymore.


5W-20 Valvoline Advanced full synthetic NOACK of 7.6 ... not too shabby if you can use a 5W-20.
 
Originally Posted By: 1JZ_E46
Their answers regarding NOACK were total cop-outs. Let’s be honest. Same for HTHS.

Noack was addressed in this thread, but HTHS is too easy. One can almost always guess the HTHS of a finish motor oil and be correct with 0.1 (or 0.2 on the outside) based upon the specifications it meets. You're not going to be finding, for instance, a 5w30 ILSAC with an HTHS of 3.6. They'll all bump around the 2.9-3.1 mark, with few outliers. Similarly, you won't see a 5w30 in E7 or A3/B4 straying too high above the 3.5 minimum.
 
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