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Tungsten Ravenol #5355045 02/20/20 02:37 AM
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V10 Offline OP
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Any insight if Tungsten used in Ravenol has any detrimental effect on an engine. Wish BlackStone tested for it, at least for quantity purposes.

Attached PDF document
RAVENOL 10W-50.pdf (155.88 KB, 27 downloads)
Re: Tungsten Ravenol [Re: V10] #5355050 02/20/20 02:46 AM
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Olas Offline
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Tungsten Disulfide is known to have an extremely low coefficient of friction, and is thought to 'coat' moving parts of the engine.
Millers Nanotech oils used this idea a few years ago - Maybe I'm a late adopter but I tried it once and went back to my moly/zinc comfort zone.

Re: Tungsten Ravenol [Re: V10] #5355060 02/20/20 03:28 AM
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Mad_Hatter Offline
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No, not to my knowledge. MoS2 and WS2 are very similar but WS2 has some better properties like load bearing capacity. Why it's not used more in finished engine lubricants is probably due to cost. Whereas Moly provides good enough (added) lubricity at a much cheaper cost?

Last edited by Mad_Hatter; 02/20/20 03:30 AM.
Re: Tungsten Ravenol [Re: V10] #5355221 02/20/20 09:26 AM
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bluesubie Offline
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Originally Posted by V10
Wish BlackStone tested for it, at least for quantity purposes.


Yes, it would be cool if we could say, "Wow, the Ravenol 10W-50 has a [nice slug/boatload] of tungsten". grin2


'20 Subaru Outback Onyx XT | Idemitsu 0W-20 dexos 1 G2
'04 Subaru Forester 2.5XT | Castrol Edge 0W-40
Re: Tungsten Ravenol [Re: Olas] #5355285 02/20/20 10:23 AM
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Trav Offline
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Originally Posted by Olas
Tungsten Disulfide is known to have an extremely low coefficient of friction, and is thought to 'coat' moving parts of the engine.
Millers Nanotech oils used this idea a few years ago - Maybe I'm a late adopter but I tried it once and went back to my moly/zinc comfort zone.


Castrol used it over 40 years ago not that it had much anti wear benefit, more like advertising fluff.

[Linked Image]


ASE L1, Master. Deutsch Meisterbrief.
Re: Tungsten Ravenol [Re: V10] #5355309 02/20/20 10:42 AM
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JohnG Online Content
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I have it in my Mercedes E300 now. I chose the FDS version of Ravenol 5w-30 since it was MB Approval 229.6. Not cheap, like
$10.00 / Liter, but I'm very happy with it so far.

The engine is a TGDI 4 cyl and the Ravenol is largely PAO base (or so it says) therefore according to their website, very minimal VII are used.

After a short while running it, I can see a light gray coating developed on the surface of the Cam Lobes, which I am assuming is a result of the Tungsten Disulfide.
For what it's worth, I've also noticed an increase in fuel economy, and routinely see 40 mpg on the display, and average about 28 mpg on short trips here in Florida.

Re: Tungsten Ravenol [Re: V10] #5355318 02/20/20 10:54 AM
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The current Tungsten chemistry is a tungstate called Dialkylammonium Tungstate, and is a Multi-Functional Anti-Wear, Friction Reducer, and Anti-Oxidant agent.


Dr. Larry Fleinhardt: "You know, that term "dark matter" has always perplexed me. It fallaciously implies that the 95% of our universe that cannot be observed is some amorphous, eventless emptiness."
Amita Ramanujan: "I'm sorry?"
Dr. Larry Fleinhardt: "I guess it's all too human. Instead of admitting to the present limits of our knowledge, we just declare things to be unknowable." NUMB3RS
Re: Tungsten Ravenol [Re: V10] #5355369 02/20/20 11:47 AM
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WyrTwister Offline
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Where do we / the USA get tungsten , now a days ?

I heard on a documentary on the SR-71 , that we purchased tungsten from the USSR , through a shell/dummy corporation , to build the plane ?

Do we , currently , have a " friendlier source , now ?


Wyr
God bless
Re: Tungsten Ravenol [Re: WyrTwister] #5355374 02/20/20 11:50 AM
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That was Titanium for the SR-71 project

We have tungsten.

Re: Tungsten Ravenol [Re: tundraotto] #5355384 02/20/20 12:05 PM
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kschachn Offline
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Originally Posted by tundraotto
That was Titanium for the SR-71 project

We have tungsten.

Given that the density of tungsten is nearly double that of lead would make it a particularly poor choice for aircraft structure.

Yes we have a little titanium but not as much as others. I saw one article that said we have only one domestic source which accounts for 40% of the US demand. Here is apparently where we get the rest:

https://www.ustradenumbers.com/import/titanium-including-waste-and-scrap/


1994 BMW 530i, 252K
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Re: Tungsten Ravenol [Re: MolaKule] #5355387 02/20/20 12:10 PM
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Originally Posted by MolaKule
The current Tungsten chemistry is a tungstate called Dialkylammonium Tungstate, and is a Multi-Functional Anti-Wear, Friction Reducer, and Anti-Oxidant agent.

Why, in your opinion, don't we see it used by more of the majors??

Re: Tungsten Ravenol [Re: Trav] #5355480 02/20/20 01:22 PM
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Yikes!

Originally Posted by Trav
Originally Posted by Olas
Tungsten Disulfide is known to have an extremely low coefficient of friction, and is thought to 'coat' moving parts of the engine.
Millers Nanotech oils used this idea a few years ago - Maybe I'm a late adopter but I tried it once and went back to my moly/zinc comfort zone.


Castrol used it over 40 years ago not that it had much anti wear benefit, more like advertising fluff.

[Linked Image]


Save the manuals
Re: Tungsten Ravenol [Re: Mad_Hatter] #5355484 02/20/20 01:27 PM
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MolaKule Offline
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Originally Posted by Mad_Hatter
Originally Posted by MolaKule
The current Tungsten chemistry is a tungstate called Dialkylammonium Tungstate, and is a Multi-Functional Anti-Wear, Friction Reducer, and Anti-Oxidant agent.

Why, in your opinion, don't we see it used by more of the majors??


Good question! Maybe they are testing it to see if added metallic's such as this contribute to LSPI? shrug


Dr. Larry Fleinhardt: "You know, that term "dark matter" has always perplexed me. It fallaciously implies that the 95% of our universe that cannot be observed is some amorphous, eventless emptiness."
Amita Ramanujan: "I'm sorry?"
Dr. Larry Fleinhardt: "I guess it's all too human. Instead of admitting to the present limits of our knowledge, we just declare things to be unknowable." NUMB3RS
Re: Tungsten Ravenol [Re: kschachn] #5355514 02/20/20 02:06 PM
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Originally Posted by kschachn
Originally Posted by tundraotto
That was Titanium for the SR-71 project

We have tungsten.

Given that the density of tungsten is nearly double that of lead would make it a particularly poor choice for aircraft structure.

Yes we have a little titanium but not as much as others. I saw one article that said we have only one domestic source which accounts for 40% of the US demand. Here is apparently where we get the rest:

https://www.ustradenumbers.com/import/titanium-including-waste-and-scrap/


Tungsten's primary military application would be on armor piercing shells, such as the HVAP ammo that was in short supply in WWII used by the 76mm M1 gun on tank destroyers and upgraded Shermans...

Re: Tungsten Ravenol [Re: Mad_Hatter] #5355519 02/20/20 02:08 PM
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Originally Posted by Mad_Hatter
Originally Posted by MolaKule
The current Tungsten chemistry is a tungstate called Dialkylammonium Tungstate, and is a Multi-Functional Anti-Wear, Friction Reducer, and Anti-Oxidant agent.

Why, in your opinion, don't we see it used by more of the majors??


In their relentless dive to the bottom concerning costs. Major oil brands utilize whatever meets bare testing minimums to reduce costs. That is why it cost $10 a liter for Ravenol and $2.50 a quart for Casstrol, M1 etc...


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