SHELL Full Synthetic : S.N. / GF-5 ; Technical ...

[odie]

Data Sheet posted JUNE 2010 , www.epc.shell.com/Docs/GPCDOC_X_cbe_24855_key_140003596099_201007081845.pdf . This the T.D.S. for the S.M./GL-4 synthetic , www.shellusserver.com//products/pdf/FormulaShellFullSynthetic.pdf from JUNE 2007. They're identical . So , what's the difference of the two ?

. THANKS .

 

[chubbs1]

Additive packs I am pretty sure. Most major blenders are using the new "Low Impact ZDDP". I have seen some studies posted on the stuff and it is more effective at it's job because more is available to the engine while using less total amount. Poorly explained. Basically it is more efficient so say there was 700 ppm zinc in the SM, the "low impact" can do the same or better job at 500ppm (about 30% better) to get better cat life.

 

[odie]

Originally Posted By: odie
Data Sheet posted JUNE 2010 , www.epc.shell.com/Docs/GPCDOC_X_cbe_24855_key_140003596099_201007081845.pdf . This the T.D.S. for the S.M./GL-4 synthetic , www.shellusserver.com//products/pdf/FormulaShellFullSynthetic.pdf from JUNE 2007. They're identical . So , what's the difference of the two ?

. THANKS .
Oops , meant S.M./GF-4 , not GL-4 .

 

[unDummy]

But, most additive package changes yield a different data-sheet, as we've been seeing with most oils that move to GF5/SN when compared to GF4/SN.

The only other thing that can be considered is that this oil was already up to the GF5/SN level of performance and did not need any reformulating.

 

[odie]

If you look at the charts for the 5w-20 S.M. synthetic , S.N. synthetic , and the S.N. conventional you'll notice they all have the same pour point of -49 . Is it possible for the S.N. conventional 5w-20 to have same pour point of -49 as the S.M./S.N. synthetics ?