CAS #'s and group III's

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Every group III oil I have looked at has the CAS # 64742-54-7 as the base oil. The Chevron ,Motorcraft, Conoco Hydroclear and a couple of other OTC buck a quart oils have this same CAS# as well. So are those three mentioned as group III as it gets without the hype and the price ?
 
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Originally posted by Pops: Every group III oil I have looked at has the CAS # 64742-54-7 as the base oil. The Chevron ,Motorcraft, Conoco Hydroclear and a couple of other OTC buck a quart oils have this same CAS# as well. So are those three mentioned as group III as it gets without the hype and the price ?
No, it doesn't mean that at all. The CAS# for ANY hydrocracked and isodewaxed base oil will be 64742-54-7. This includes Group II, II+ and III. What this means is that you can't tell from the MSDS and the CAS # if an oil is Group II or Group III, with one exception. Wax isomerates (like Shell XHVI and ExxonMobil ExxSyn) are Group III and they DO have a different CAS #, 92062-09-4. [ January 19, 2003, 11:17 AM: Message edited by: G-Man II ]
 

Pops

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So if it is advertised as a full synthetic and has that CAS # it would be a group III ?
 
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Originally posted by Pops: So if it is advertised as a full synthetic and has that CAS # it would be a group III ?
Yes, if the bottle says synthetic, but the CAS # is 64742-54-7 or 92062-09-4, then it's a Group III oil. The CAS # for PAO is 68037-01-4.
 

Pops

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G Man thank you. You are very knowledgable [Cheers!] Not including CAS numbers but what Esters would be used in the Hi-Milaege formulated dinos to swell seals and about how much per quart woud be added to the formulation ? TIA
 
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Originally posted by Pops: Not including CAS numbers but what Esters would be used in the Hi-Milaege formulated dinos to swell seals and about how much per quart woud be added to the formulation ?
That I don't know the answer to. MolaKule would be the one to ask. Hopefully he'll look in on this thread. [Smile]
 
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