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Naphthenic Oils #5138615 06/19/19 04:06 PM
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MolaKule Offline OP
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Supply the missing words:

Naphthenic oils (Group V) are sometimes called ______ ____ and are rich in ____________.






This question is open to ALL.

Last edited by MolaKule; 06/19/19 04:10 PM.

Charlie Eppes: "What do you think we should do now?"
Don Eppes: "The same thing when I was in school and I didn't know the answer – fake it." From NUMB3RS
Re: Naphthenic Oils [Re: MolaKule] #5138620 06/19/19 04:12 PM
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Naphthenic oils (Group V) are sometimes called pale oils and are rich in cyclo-paraffins.


"He who is without oil, shall throw the first rod." - Compressions 9:1
Re: Naphthenic Oils [Re: MolaKule] #5138635 06/19/19 04:38 PM
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Rich in aromatics(high solvency)?


'95 Chevy 1/2t 305 208k -NexGen Maxlife 5w-30, Wix filter
'04 Crown Vic 95k Maxlife full syn 5w-20
Re: Naphthenic Oils [Re: MolaKule] #5138641 06/19/19 04:49 PM
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Pale Oils, Aromatics


2011 Impala
2012 Colorado
Oil: 5w30 synthetic
Filters: Wix 51522 for both
Re: Naphthenic Oils [Re: MolaKule] #5138668 06/19/19 05:28 PM
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Needleman Offline
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pale oils, aromatics


2014 Subaru Legacy 2.5 53k -- Subaru 0W-20/Subaru OEM filter
Re: Naphthenic Oils [Re: MolaKule] #5138672 06/19/19 05:37 PM
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I had to Google it,,,, wink



73 Big Block, 4sp Corvette
Couple of airplanes
Re: Naphthenic Oils [Re: MolaKule] #5138676 06/19/19 05:40 PM
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RDY4WAR Offline
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They are also rich in aromatics. I'm not sure which one you want.


"He who is without oil, shall throw the first rod." - Compressions 9:1
Re: Naphthenic Oils [Re: MolaKule] #5138693 06/19/19 05:56 PM
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talest Offline
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1. Synthetic Technology ?
2. Esters and polyolesters?

Re: Naphthenic Oils [Re: MolaKule] #5138817 06/19/19 08:25 PM
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Wait, are naphthenics GroupV? Like the naphthenic transformer oils produced by Ergon and Cross Oil (Martin)? These naphthenic oils are more cyclic, crude based, not really polyol ester type oils.

Re: Naphthenic Oils [Re: talest] #5138822 06/19/19 08:36 PM
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And naphthenes and aromatics are distinctly different.

(NA) Re: Naphthenic Oils [Re: OilSwine] #5138843 06/19/19 09:30 PM
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MolaKule Offline OP
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Originally Posted by OilSwine
Wait, are naphthenics GroupV? Like the naphthenic transformer oils produced by Ergon and Cross Oil (Martin)? These naphthenic oils are more cyclic, crude based, not really polyol ester type oils.

Not all Group V oils are synthesized, or esters, or have to be to fall into the API Group V classification.

Quote
Group V embraces everything else, ranging from some very low-quality naphthenics all the way up to some very exotic synthetic oils. Other occupants of this group are organic esters, compressor oil, some biodegradable


See chart on Page 33 of 35:


STLE Page 33 Chart

Last edited by MolaKule; 06/19/19 10:04 PM.

Charlie Eppes: "What do you think we should do now?"
Don Eppes: "The same thing when I was in school and I didn't know the answer – fake it." From NUMB3RS
(NA) Re: Naphthenic Oils [Re: Taildragger] #5138852 06/19/19 09:55 PM
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MolaKule Offline OP
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Originally Posted by Taildragger
I had to Google it,,,, wink


And what is your answer?


Charlie Eppes: "What do you think we should do now?"
Don Eppes: "The same thing when I was in school and I didn't know the answer – fake it." From NUMB3RS
(NA) Re: Naphthenic Oils [Re: Needleman] #5138888 06/19/19 10:42 PM
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Originally Posted by Needleman
pale oils, aromatics


^^this^^

(NA) Re: Naphthenic Oils [Re: MolaKule] #5139769 06/20/19 11:35 PM
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MolaKule Offline OP
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Many good answers but RDY4WAR had the first correct and complete answer.

Group V Naphthenic oils are sometimes called "Pale Oils" because of their pale color and are rich in cyclo-parrafins.

Cyclo-parrafins (also called "naphthenes") are saturated cyclic hydrocarbons of the general formula CnH2n, i.e, a hydrocarbon with a molecule containing a ring (cyclic) of carbon atoms joined by single bonds.

They are rich in aromatics which gives them a solvency advantage for certain additives.

Their low paraffin (a flammable, whitish, translucent, waxy solid consisting of a mixture of saturated hydrocarbons) content gives them an inherently low pour point.

But they also have a relatively low VI and their lubricating performance and oxidation stability are poor.

Their applications are in transformer oils, additive solvents, spray cans as the solvents for lubes and rust preventives, and other specialty applications.

Last edited by MolaKule; 06/23/19 01:26 PM.

Charlie Eppes: "What do you think we should do now?"
Don Eppes: "The same thing when I was in school and I didn't know the answer – fake it." From NUMB3RS
(NA) Re: Naphthenic Oils [Re: MolaKule] #5149174 07/02/19 01:01 AM
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Group I base oil stocks contain greater than 0.03% sulfur, less than 90% saturates. Groups II and III are both hydroprocessed oils with comparable purity and typically 99% saturates.
Cyclo-parrafins (also called "naphthenes") are saturated cyclic hydrocarbons.

Thus, naphthenic oils belong to 1-3 groups, depending on the content of sulfur and aromatic hydrocarbons. ?


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