quote:
Originally posted by RTexasF:
As far as the U.S. market is concerned - Are there true synthetics in addition to Mobil 1, Red Line, Amsoil (certain formulas), and Schaeffers (certain formulas)?
It all depends on how you define "synthetic" and "synthesized." I happend to think that if the end result of a catalytic process is oil, and the feestock for that process wasn't oil, then the end result is a "synthesized" oil. I'm not a chemist or engineer, so this is just my novice ideas about what constitutes "synthetic" oil. And based on my research, there are only two base oils that meet the criteria of not having "oil" as their feedstocks: PAO and Shell's XHVI. (Edit: And of course, Group V esters.)quote:
Originally posted by MolaKule:
XHVI,
I would disagree in that only polymerized base oils are true synthetics.
And Chevron chemists would disagree that only Shell's G-3 could be considered synthetics.
Chvron says their ALL-HYDROPROCESSING route is the only real G-III synthetic.
Where are these oils "easily obtainable"? I've never seen any of them on any shelf in the stores or auto parts houses in my area (South Eastern US).quote:
Originally posted by dragboat:
Here are but a few more easily obtainable:
Conoco has one
Phillips 5/30
Castrol R4 5/40
Pennzoil Euro
Quaker State Euro
BelRay 0/40 - 15/50
PJ-1 Gold Fire 20/50
Maxum 4 15/50
Motul
Synergyn-Group IV-V blend
We'll have to agree to disagree then. In my book, if something is synthesized, then it's "synthetic." As I said, I'm no chemist. But if ethelyne gas is transformed into oil (PAO), that oil has been synthesized. If slack wax is transformed into oil (Shell's XHVI), that oil has been synthesized. If VGO is catalytically processed and the end result is oil (Chevron's UCBO), catalytic transformation of the non-oil elements may have taken place, but the end result is not truly a "synthetic" because the feedstock was oil in the first place.quote:
Originally posted by MolaKule:
This is a repost!
XHVI,
I did define true synthetics, "...only polymerized base oils are true synthetics." This term has been in use since 1951 when Gulf Oil first used the term for the first PAO. Where in the G-III process is anything polymerized?
Just because a material is "catalyzed" doesn't mean it's synthetic.
No, the point is that I disagree with you that polymerization is what constitutes a "synthetic oil." I don't know how many different ways I can say this. For me, if the end result of a catalytic process which began with a non-oil feedstock is oil, then that oil was synthesized. Period. PAO and Shell's XHVI both fall into this category.quote:
Originally posted by MolaKule:
The point is, it is the chemical processing (polymerization) that determines whether or not an oil is truly synthetic.
Baloney. The feedstocks of both oils are the result of distilling crude oil. For PAO, it's the ethylene gas. For XHVI, it's the slack wax that is removed from the VGO. The feedstock for other Group III base oils is distilled crude, the VGO.quote:
Originally posted by MolaKule:
By your definition, we should NOT classify PAO, Shell's G-III, or Chevron's G-III, as synthetic because it came from petroleum feedstocks.
Confusious say to cruise the motorcycle shops and dealers with eyes openquote:
Originally posted by XHVI:
Where are these oils "easily obtainable"? I've never seen any of them on any shelf in the stores or auto parts houses in my area (South Eastern US).quote:
Originally posted by dragboat:
Here are but a few more easily obtainable:
Conoco has one
Phillips 5/30
Castrol R4 5/40
Pennzoil Euro
Quaker State Euro
BelRay 0/40 - 15/50
PJ-1 Gold Fire 20/50
Maxum 4 15/50
Motul
Synergyn-Group IV-V blend
I'm not attemtping to change anything. I simply disagree with you. If you can't see the reasoning behind my "definition" of a synthetic oil, there's not much I can do about that.quote:
Originally posted by MolaKule:
XHVI,
You're attempting to change the accepted (technical literature) definition for your own purposes or criterion, whatever they may be.