Mobil 1 0W-40 Base Oils Revealed

[JAG]

It's amazing what is posted on the internet.

The paper is dated 2006 and is titled: "IN SITU LUBRICANT DEGRADATION IN ANTARCTIC MARINE SEDIMENTS. 1. SHORT-TERM CHANGES"

http://www.setacjournals.org/perlserv/?request=get-document&doi=10.1897/05-015R.1&ct=1

The purpose of this study was ecological in nature. They measured/identified the base oils in two oils, Mobil 1 0W-40 and Fuchs Titan GT1. I'll just highlight the M1 findings.

Quote:
The unused lubricant was found to contain a complex mixture of alpha olefins, several specific alkyl diphenylamines, a complex mix of C26H40 alkyl naphthalenes, 4,4′-methylene-bis(2,6-di-tert-butylphenol), and a range of alkanoate esters of 1,1,1-tris(hydroxymethyl)propane (1,1,1-TMP) (Fig. 2).


If that's Greek to you, that means multiple PAO base oils, multiple alkylated napthalenes (Group V oil), and multiple TMP esters.

The butylphenol mentioned in the quote is an antioxidant, not a base oil.

That's a very nice base oil mixture which is no surprise because the specs that this oil meets are some of the toughest to meet. So there we have it, Mobil 1 0W-40 uses a Group IV/V mixture.

 

[OVERKILL]

Supports what Doug Hillary has been stating about this oil from the beginning.

 

[BrianWC]

Good work JAG! Those 4 qts on my shelf are looking a bit nicer!

 

[Rolf]

Originally Posted By: JAG
That's a very nice base oil mixture which is no surprise because the specs that this oil meets are some of the toughest to meet. So there we have it, Mobil 1 0W-40 uses a Group IV/V mixture.


You may have missed the reference to "Mobil 1 (0W/40) trisynthetic lubricant (Exxon Mobil, Irving, TX, USA)".

Tri-Syn was a couple of iterations ago in the Mobil 1 line-up.



.

 

[Gary Allan]

Proof that you can cold cache oil on the sea floor for later reclamation.

(imagine some less cerebral type ..late teens ..mid 20's ..)

Well, I'll bet Amsoil would have retained even the additive packs in the same test on a one year SCI (sediment change interval).

Good alternate source there, JAG. They're not selling motor oil ..or even cars.

 

[bmwtechguy]

You crack me up, Gary!

 

[ewetho]

It is an older article but they were on Supersyn by then weren't they? Anyhow that is some pretty tightly controlled stuff, blended at a certain group of cars. Probably not changed much.

 

[Cutehumor]

how's this stuff Group V oil? if the UOA's posted over the years show this 0w-40 grade shears? or am I missing something?

 

[buster]

Originally Posted By: Cutehumor
how's this stuff Group V oil? if the UOA's posted over the years show this 0w-40 grade shears? or am I missing something?


What on earth are you talking about?

Does anyone take the time to search and read prior threads anymore?

 

[ZZman]

That is nice...for 3 years ago.

And doesn't help me when I run a 5w-20 or 30........

 

[JAG]

Originally Posted By: Rolf
Originally Posted By: JAG
That's a very nice base oil mixture which is no surprise because the specs that this oil meets are some of the toughest to meet. So there we have it, Mobil 1 0W-40 uses a Group IV/V mixture.

You may have missed the reference to "Mobil 1 (0W/40) trisynthetic lubricant (Exxon Mobil, Irving, TX, USA)".

Tri-Syn was a couple of iterations ago in the Mobil 1 line-up.
I searched the document and saw no mention of the oil being the Tri-Synthetic version. I know that that version preceded the current Supersyn version and that its base oil mix was PAO, ester, alkylated napthalene mix, hence the name. Is that what your point is? Or did I miss that the oil being tested here bis the Tri-Synthetic version?

 

[Cutehumor]

Originally Posted By: buster
Originally Posted By: Cutehumor
how's this stuff Group V oil? if the UOA's posted over the years show this 0w-40 grade shears? or am I missing something?


What on earth are you talking about?

Does anyone take the time to search and read prior threads anymore?

nope, I can't keep up with guys who have 20k posts.

The search function sucks so I quit using it years ago.

 

[JAG]

Originally Posted By: Cutehumor
how's this stuff Group V oil? if the UOA's posted over the years show this 0w-40 grade shears? or am I missing something?
The base oil mix was stated above and it is not just Group V. Oils permanently shear when viscosity index improvers break apart.

 

[aaxb970]

I like mobil 1, seems to work but can be pricey @ times. Its nice that you have found this info...now all the arguing!

 

[RI_RS4]

No matter what the base stocks, a 0W40 still requires Viscosity Index Improvers, and can still shear.

If y'all have learned one thing on BITOG, it's that base oils alone do not determine performance. Base oils need to be formulated with additives which enhance the properties. It is these additives that define many of the properties we like in a good oil. Focus on base oil composition alone is an interesting exercise.

 

[buster]

Quote:
It is these additives that define many of the properties we like in a good oil.


+1

 

[Ken42]

Jag 8th paragraph down from Introduction you will find this reference.

The aim of the present study was to investigate the in situ degradation of a Mobil 1 (0W/40) trisynthetic lubricant (Exxon Mobil, Irving, TX, USA),

Ken

 

[daman]

Originally Posted By: BrianWC
Good work JAG! Those 4 qts on my shelf are looking a bit nicer!

yes nice find great oil the 4 cases on my shelf look even better always knew ow40 was great oil,an oil still can protect well if it shears.

 

[Rolf]

Originally Posted By: Cutehumor
how's this stuff Group V oil? if the UOA's posted over the years show this 0w-40 grade shears? or am I missing something?


Mobil 1 0W-40 is on the very low end of 40.

Slight shearing and it measures as a high 30.

Folks don't do VOAs to compare with UOAs and conclude it's shearing more than it is.




.

 

[Rolf]

Originally Posted By: Rolf
You may have missed the reference to "Mobil 1 (0W/40) trisynthetic lubricant (Exxon Mobil, Irving, TX, USA)".

Tri-Syn was a couple of iterations ago in the Mobil 1 line-up.


Originally Posted By: JAG
[I searched the document and saw no mention of the oil being the Tri-Synthetic version.


Once again "Mobil 1 (0W/40) trisynthetic lubricant".

That is a direct quote.



.