Originally Posted By: BobFout
Originally Posted By: 21Rouge
Originally Posted By: vinu_neuro
Why does the Canadia PDS show HTHS of 2.9cst?
Could it be that this isn't *German* Castrol but maybe USA made Castrol Syntec 0W30?
US Syntec didn't meet any Euro specs, just API and select few engine ones. The oil Vinu linked to meets *some* Euro specs, just ACEA and VW, not BMW or MB, so it's not the normal GC as we know it.
ALSO, that HTHS test is not the normal ASTM test.
This is the kind of crosstalk that makes me wonder, still, after reading 31 pages of this thread, what is German Castrol? Some references say HTHS is 2.9. Some say 3.5. I looked at the PDS on Castrol's US site, and they don't even list HTHS or Flash Point. If this oil is so outstanding, why don't they post the specs? I searched the Castrol UK site, and I found this spec sheet for Formula SLX:
http://datasheets.bp.com/bpglis/FusionPDS.nsf/0/EC479052BF4A9A6F802577ED00480ADD/$file/BPXE-85KNNG_0.pdf
Might this be the stuff we know as German Castrol in the States? The problem is, this spec sheet dates back to 2003, and there certainly have been changes to the formulation since then.
I searched the German website, and found the spec sheet for SLX Professional Longtec:
http://datasheets.bp.com/bpglis/FusionPDS.nsf/0/C77D6A12D87B276D802577ED004A9A13/$file/BPXE-85KSC6_0.pdf
This has the proper 100C viscosity of 12.2, and shows HTHS of 3.5, but measured by the ASTM-D4683 method. Also, the Flash Point is only 212C. At least this sheet dates to 2007, which was after the changeover from Green GC to Gold GC.
Also on the German Castrol website is the spec sheet for SLX Professional Powerflow BMW LL04:
http://datasheets.bp.com/bpglis/FusionPDS.nsf/0/2C00764F01EEFFF0802577ED00480CC6/$file/BPXE-85KPQ6_0.pdf
This also has a high 100C vis of 12.3, but unfortunately does not list HTHS. The Flash Point of this oil is 238C, which is much higher than the other SLX Professional. Also, the TBN is 7.0, and only 0.7% SA. This sheet also dates to 2007.
Another "Heavy 30" on the German Castrol site is SLX Professional Powerflow C3:
http://datasheets.bp.com/bpglis/FusionPDS.nsf/0/8F1D53351A02CF29802577ED004A9D86/$file/KHET-87XC3L_0.pdf
This stuff is probably not so wonderful, as it appears to be a low-SAPS formulation.
I even found a Green GC on the site, SLX Longlife II:
http://datasheets.bp.com/bpglis/FusionPDS.nsf/0/E41E149AB72737FD802577ED00480C48/$file/BPXE-85KPG2_0.pdf
But don't get excited, its 100C viscosity is only 10.1, so it's not a "Heavy 30".
The Germans really seem to like the "Heavy 30" concept, some of their Edge oils also have 100C viscosity of ~12.2. But the flash points are low.