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not a typical group III oil it seems
Posted by Dean (more from Dean) on Tue, 2 Mar 2004 16:54:13
In Reply to: so they are different here and there..., Dean, Tue, 2 Mar 2004 15:17:14
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I snagged this off of a shell posting, obviously by someone inside of shell.
It is true that Rotella T Synthetic is Group III (not PAO) based, but you must keep in mind that not all Group III base oils are created equal. Rotella T Synthetic is made with Shell's XHVI base oil, which unlike other Group IIIs does not begin as distilled crude oil, hence of all Group III base oils, XHVI is truly the only one that can legitimately be called "synthetic." XHVI is a wax isomerate, meaning that it is made from the slack wax removed from distilled crude in normal solvent dewaxing. This slack wax is catalytically transformed (isomerized) and hydrofinished into a chemically pure base oil which rivals PAO in virutally every category. There are other "synthetic" oils out there based on Group III, but Shell's is unique in that it uses XHVI base oil. (And I believe Castrol uses Shell's XHVI too.) Chevron and Petro-Canada produce Group III base oils that come close to XHVI, but even though these oils are all hydroprocessed and utilize the same type of isomerization technology employed in the making of XHVI, they are not the same thing. Only XHVI is made from pure petroleum slack wax and its CAS number is 92026-09-4. The CAS number for the more typical all-hydroprocessed Group III base oils is 64742-54-7. If you want to know what your "synthetic" oil is made from, take a look at the MSDS and look for these numbers. (The CAS number for PAO is 68037-01-4.)
In brief, don't be so quick to dismiss Rotella T Synthetic as just another "synthetic pretender." Its made with the same base oil as Shell's Helix Ultra, and everytime you see Ferrari win a Formula 1 race, that's the oil in the engine.
posted by 65.68.10...
Posts in this Thread:
- Dean-> Rotella 0W40, steveC, Tue, 2 Mar 2004 10:07:57
- What d cST and the temp mean? n/m, Noel, Tue, 2 Mar 2004 11:02:57
- 5W40? n/m, Dean, Tue, 2 Mar 2004 10:35:20
- Re: 5W40?, Stephen Goldberger, Wed, 3 Mar 2004 10:20:28
- BTW, steveC, Tue, 2 Mar 2004 11:41:51
- link inside, not on main rotella page, steveC, Tue, 2 Mar 2004 11:38:08
- so they are different here and there..., Dean, Tue, 2 Mar 2004 15:17:14
- Price differences, Eiron, Wed, 3 Mar 2004 10:45:54
- Re: so they are different here and there..., steveC, Tue, 2 Mar 2004 18:44:13
- not a typical group III oil it seems, Dean, Tue, 2 Mar 2004 16:54:13 <-- Viewing This Message
- Also Shell's group III is capable of GM LL 025, Stephen Goldberger, Wed, 3 Mar 2004 10:25:26
- suggestion to look at MSDS, TML , Wed, 3 Mar 2004 03:53:39
- very interesting, TML , Wed, 3 Mar 2004 03:29:45
- good enough for the F1 & Enzo is good enough for me :), Trev, Tue, 2 Mar 2004 17:57:23
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