GC 0W-30 Viscosity @ 40C

[john1944]

Does anyone know what the viscosity of GC 0W-30 @ 40C is? It is
not on the Castrol PDS and I cannot find it on the web.

Thanks
John

 

[addyguy]

I think its about 70.

 

[john1944]

Originally Posted By: addyguy
I think its about 70.


I need the exact number for the viscosity graphs. Castrol Edge is 70, but I can't find the GC 0W-30 number anywhere.
HELP?

 

[john1944]

I just got off the phone with the USA Castrol representative and she told me there is no way for her to obtain the cSt data value for GC 0W-30 @ 40C. So go figure.

 

[Quattro Pete]

The specsheet that I have for SLX LongTec says it's 72 mm2/s. I had a VOA done of this oil and the add pack was practically identical to GC Gold, so it was most likely the same stuff.

 

[CATERHAM]

It is 66.8 cSt.

 

[jpr]

Originally Posted By: CATERHAM
It is 66.8 cSt.
Nope - 66.8 is the ASTM D-2161 210ºF SUS viscosity, not the Kv40 viscosity.

I've got the Kv40 cited at 70.5 on a spreadsheet of mine, but the actual source data for that value eludes me at the moment.

For comparison's sake however, here's the values for other Castrol 0W-30's with similar Kv100 values (given as Kv100/Kv40)
SLX Profesional Longtec 12.2 / 72
Edge 12.2 / 72
Edge Turbo Diesel 12.3 /71

 

[INDYMAC]

I have a GC Gold (SL) UOA from a 2003 G35 with 4113 miles on the oil.

cSt@40C=72.3
cSt@100C=12.2

That's probably close to VOA, but you can check the VOA section.

 

[shanneba]

67.6 on the old green formula...

http://www.bobistheoilguy.com/forums/ubb...&gonew=1#UNREAD

 

[shanneba]

or 69.7 here:

http://www.bobistheoilguy.com/forums/ubbthreads.php?ubb=showflat&Number=476803#Post476803

 

[shanneba]

or 68.6.........72.9
for green or gold here:

http://www.bobistheoilguy.com/forums/ubbthreads.php?ubb=showflat&Number=478424#Post478424

 

[lexus114]

Pour point is -40F according to their website.