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#4580855 - 11/21/17 09:36 AM API Base Oil Groups 1 - V.
DWC28 Offline


Registered: 07/31/03
Posts: 207
Loc: Houston, TX
Are any of you aware of when the API Base Oil groups originated and how they came about? It seems that they originated around the same time as API SH and CD but I cannot find any history of who originated the five groups.

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#4580871 - 11/21/17 09:54 AM Re: API Base Oil Groups 1 - V. [Re: DWC28]
kschachn Offline


Registered: 12/26/05
Posts: 9390
Loc: Upper Midwest
The API categorizes base groups in API 1509 Appendix E. That's available online if you search.

What's interesting is that the group designations are intended to give guidance to blenders and formulators for interchangeability in base stocks to ensure consistent performance, not as an overall indicator of finished oil performance. You see people on here constantly extrapolating the group designations of API 1509 Appendix E into some grand measure of "quality" but that is not the intended use. A finished oil is still more than the physical properties of the base stock.

As to when it came about I don't know. Perhaps the API could tell you when API 1509 Appendix E was first published.
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#4580884 - 11/21/17 10:17 AM Re: API Base Oil Groups 1 - V. [Re: DWC28]
bullwinkle Online   confused


Registered: 10/09/04
Posts: 7664
Loc: Cincinnati, OH, USA
I imagine Group I was probably about 1900 or so. Group V was pioneered by the Germans before WWII for aircraft in cold weather conditions, along with GTL technology (Fischer-Tropsch). Not sure about the hydrocracked groups, guessing a little later?
http://www.machinerylubrication.com/Read/28671/basics-of-syntic-oil-technology-
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#4580936 - 11/21/17 11:11 AM Re: API Base Oil Groups 1 - V. [Re: DWC28]
MolaKule Offline


Registered: 06/05/02
Posts: 19042
Loc: Iowegia - USA

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#4581200 - 11/21/17 04:55 PM Re: API Base Oil Groups 1 - V. [Re: MolaKule]
DWC28 Offline


Registered: 07/31/03
Posts: 207
Loc: Houston, TX
Appreciate your responses but I must not have identified what I was looking for. The API base oil groups have been well defined and much written about them. But, what I am looking for is how and when they came to be called Grp I, Grp II etc. I do not believe that the early oil industry called the early solvent refined oils Group I oils. But some where they began to be called that, Was 1509 the original name assigner? Was the first issue of 1509 the first time base oils had been divided into these five groups? I assume it was done for base oil read across purposes AKA saving money in testing. I am older than most of you but I cannot recall discussions on how the various groups got their spots. Thanks again.

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#4581388 - 11/21/17 08:06 PM Re: API Base Oil Groups 1 - V. [Re: DWC28]
MolaKule Offline


Registered: 06/05/02
Posts: 19042
Loc: Iowegia - USA
For the History of the API try:

The Story of the American Petroleum Institute, by Leonard M. Fanning, published in 1959, and

The American Petroleum Institute: An Informal History (1919 – 1987) by Stephen P. Potter, published by API in 1990

Alibris or Abe's book stores may have them.


Also:

https://aoghs.org/



Edited by MolaKule (11/21/17 08:11 PM)

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#4581949 - 11/22/17 01:48 PM Re: API Base Oil Groups 1 - V. [Re: MolaKule]
Solarent Offline


Registered: 10/24/11
Posts: 945
Loc: Toronto ON
There is also a good summary of what happened in this article:

Lube Report Jan 2017

The whole history is encompassed in the need for base oil interchange circa 1991-1992

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#4581992 - 11/22/17 02:33 PM Re: API Base Oil Groups 1 - V. [Re: Solarent]
DWC28 Offline


Registered: 07/31/03
Posts: 207
Loc: Houston, TX
Originally Posted By: Solarent
There is also a good summary of what happened in this article:

Lube Report Jan 2017

The whole history is encompassed in the need for base oil interchange circa 1991-1992



Thanks Solarent, must have missed this issue of L&G. This gets me a lot closer. Wish I knew who was promoting what position, but Mr. Swedberg may write more.

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#4582014 - 11/22/17 02:49 PM Re: API Base Oil Groups 1 - V. [Re: DWC28]
Solarent Offline


Registered: 10/24/11
Posts: 945
Loc: Toronto ON
You could always email him and ask. His email address is usually included at the end of his regular column in the magazine (see page 11 in this issue).

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