VOA Shell Rotella T6 May 2017

[Frozebubba]

There is a T6 VOA from 2012 on this subforum somewhere but I can't find it again.
If someone knows how to do a search, I could use the help.
I attach my recent VOA for T6
Quite a bit of difference in the Additive Metals when comparing the 2012 results from Blackstone and the 2017 results from WIX.
In particular, the values for 2012 and 2017, respectively, are
Magnesium (1261 vs 93), Calcium (820 vs 2079) and Boron (65 vs 198).
These differences seem too large to be due solely to analytical machinery or technique.

 

[Quattro Pete]

Originally Posted By: Frozebubba
There is a T6 VOA from 2012 on this subforum somewhere but I can't find it again.

October 2016 VOA:
https://bobistheoilguy.com/forums/ubbthr..._5w#Post4238740

March 2012 VOA:
https://bobistheoilguy.com/forums/ubbthr...ed_#Post2566898

July 2011 VOA:
https://bobistheoilguy.com/forums/ubbthr...VOA#Post2330040

 

[DNVDMAX]

Starting TBN at 8.7?

Thanks for the VOA.

 

[claluja]

Higher P than the last two T6 VOAs I've seen posted on here (although the Zn to P ratio does seem a little off for conventional ZDDP). Wonder if they decided to increase P as A Harman predicted they would on another thread several months ago.

 

[A_Harman]

Thank you for getting this analysis, Frozebubba!
Here are the side-by-side results of the Polaris and Wix analyses of CK4 RT6:

.......Polaris, Wix
KV100: 14.6, 15.3 cSt
Silicon: 5,6 ppm
Sodium: 3, 4
Potassium: 2, 3
Titanium: 1, Boron: 186, 198
Magnesium: 80, 93
Calcium: 1978, 2079
Phosphorous: 944, 1049
Zinc: 1109, 1095

The values all are in a range of +/-5% of each other.
I think Polaris is all wet saying my sample was not RT6.

 

[Garak]

Nice, thanks for doing the comparison for us.