Castrol GTX Blend 5w30, 149 = VI index

[wemay]

Looking at the 5w30 PDS numbers for this oil on the Castrol site shows a VI Index of 149. Should this considered a good figure or bad:

Good because it uses less viscosity improvers?
Bad because it indicates low quality base stocks?

I'm not asserting either suggestion as fact, just interested in the plausibilty of each.

http://www.castrol.com/castrol/sectiongenericarticle.do?categoryId=9045416&contentId=7081142

 

[dparm]

Probably has very few VIIs. There are other 5w30s with low VIs that we know don't have the improvers.

 

[ARCOgraphite]

Prob and average oil using NA package with average VII.

Nothing special whatsoever.

Yawn.

 

[KCJeep]

I followed your links and I get a VI of 156, average. Not sure where you are looking.

Castrol Syn Blend PDS

Castrol is so withholding of information its tough to surmise much of anything, but looking at the MSDS I get the impression it is at least 35% synthetic. The kv's at 40 and 100 coupled with the VI of 156 suggests to me its a slightly above average thickness 5w30, 3.1 - 3.2 HTHS maybe? Who knows if you can even trust their pds the HM one has been out of date for nearly two years.

 

[wemay]

Originally Posted By: KCJeep
I followed your links and I get a VI of 156, average. Not sure where you are looking.

Castrol Syn Blend PDS

Castrol is so withholding of information its tough to surmise much of anything, but looking at the MSDS I get the impression it is at least 35% synthetic. The kv's at 40 and 100 coupled with the VI of 156 suggests to me its a slightly above average thickness 5w30, 3.1 - 3.2 HTHS maybe? Who knows if you can even trust their pds the HM one has been out of date for nearly two years.


That is odd, i included that link because the original one i used (see below) would not open here. If it doesnt work again, i googled: GTX 5w30 Synblend pds. The first hit is where i found it. I actually just did it again and it says 149.

http://www.castrol.com/liveassets/bp_internet/castrol/castrol_usa/STAGING/local_assets/downloads/p,q/pds_castrol_gtx_synblend_2010.pdf

 

[daves87rs]

Originally Posted By: KCJeep
I followed your links and I get a VI of 156, average. Not sure where you are looking.

Castrol Syn Blend PDS

Castrol is so withholding of information its tough to surmise much of anything, but looking at the MSDS I get the impression it is at least 35% synthetic. The kv's at 40 and 100 coupled with the VI of 156 suggests to me its a slightly above average thickness 5w30, 3.1 - 3.2 HTHS maybe? Who knows if you can even trust their pds the HM one has been out of date for nearly two years.




I'm pretty sure to dexos approved (which it is), it should be at least 45-60 percent synthetic. I've noticed that Castrol oils in general tend to be a bit thicker, which might help it a bit in this case....

 

[wemay]

Looking at the one i posted again, its older than KCjeep's, 2010 vs 2012 - My error guys.