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Significance of Ws2 (Tungsten Disulfide) #4757930
05/15/18 01:35 PM
05/15/18 01:35 PM
Joined: Jul 2014
Posts: 152
Ohio, United States
JHogan Offline OP
JHogan  Offline OP
Joined: Jul 2014
Posts: 152
Ohio, United States
So As I meander around the vast spaces of the internet I run into a product from Rislone that I've never heard of before.
The product in question is called " Nano Prime". It claims to be an SN/GF5 synthetic base carrier oil and contains MOs2 and Ws2. They following is a copy and paste directly from their website.
"Features MoS₂ with WS₂ Nano Technology
Increases Horsepower & Torque
Reduces Engine Friction, Heat & Wear
Repairs by Filling & Coating Rough and Worn Metal Surfaces
Cleans & Prevents Sludge"

Now the product itself isn't really something I'm interested in. I'm more curious as to this Tungsten Disulfide, and its relevancy in oil, as I've never seen it used as an additive before. Also why it would be used in conjunction with Molybdenum Disulfide as well. Appreciate any input and opinions from those who know best.


"There is no certainty, only opportunity. The past cannot hurt you anymore unless you let it.
2000 Honda Accord EX Formula Shell Syn/Blend 5W30
2011 Chevy Cruze 1.4 turbo P4 5w30 P4 Ultra 5W30


Re: Significance of Ws2 (Tungsten Disulfide) [Re: JHogan] #4757944
05/15/18 02:10 PM
05/15/18 02:10 PM
Joined: Mar 2008
Posts: 7,024
USA
slacktide_bitog Offline
slacktide_bitog  Offline
Joined: Mar 2008
Posts: 7,024
USA
It lights up when LSPI occurs laugh

Re: Significance of Ws2 (Tungsten Disulfide) [Re: JHogan] #4757949
05/15/18 02:14 PM
05/15/18 02:14 PM
Joined: Dec 2013
Posts: 3,989
Manchester, England
Olas Offline
Olas  Offline
Joined: Dec 2013
Posts: 3,989
Manchester, England
Millers have used wolfram disulfide as an add in their Nano range of oils for several years


Cable ties should hold it
Re: Significance of Ws2 (Tungsten Disulfide) [Re: JHogan] #4758048
05/15/18 04:44 PM
05/15/18 04:44 PM
Joined: Dec 2013
Posts: 3,989
Manchester, England
Olas Offline
Olas  Offline
Joined: Dec 2013
Posts: 3,989
Manchester, England
Afaik it would compete with moly because they both want to form a tribofilm but other users know better than I do.
The one time I knowingly used an oil with ws2 it was noisier than usual so I dumped it in favour of a 3:1 blend of max life and redline


Cable ties should hold it
Re: Significance of Ws2 (Tungsten Disulfide) [Re: JHogan] #4758125
05/15/18 06:16 PM
05/15/18 06:16 PM
Joined: Jul 2005
Posts: 30,623
NY
demarpaint Offline
demarpaint  Offline
Joined: Jul 2005
Posts: 30,623
NY
Ws2 falls out of suspension quickly, which is why it never caught on as an additive or part of an ad pack in oils. This info came directly from a supplier of the stuff, I discussed it in great length with them. I have a few pounds of it which I coated bullets with. I was toying with adding it to a beater a few years ago, but never did.


God Bless Our Troops

Re: Significance of Ws2 (Tungsten Disulfide) [Re: Olas] #4758189
05/15/18 07:36 PM
05/15/18 07:36 PM
Joined: Jun 2016
Posts: 3,250
MN
oil_film_movies Offline
oil_film_movies  Offline
Joined: Jun 2016
Posts: 3,250
MN
Originally Posted By: Olas
Afaik it would compete with moly because they both want to form a tribofilm but other users know better than I do.
Probably OK in certain proportions and types of compounds used. I would wonder if the Rislone product might clash with whatever motor oil you're running. Fully formulated options, while rare, do exist:
Ravenol DXG dexos1 Gen2 5w30 oil has both tungsten and moly, so they are surface compatible in certain proportions anyway.
"For the developement of RAVENOL DXG SAE 5W-30 the proven formulation of tri-nuclear molybdenum, tungsten and OFM (Organic Friction Modifiers) was used. A highly polar Group V base oil was used in this formula, which has good compatibility with the PAO used."-- Ravenol's website

Another German oil maker, LiquiMoly, has MotorProtect and MolyGen motor oil with tungsten:
https://www.bobistheoilguy.com/forums/ubbthreads.php/topics/4638150/1

Re: Significance of Ws2 (Tungsten Disulfide) [Re: JHogan] #4758263
05/15/18 09:21 PM
05/15/18 09:21 PM
Joined: Oct 2005
Posts: 5,034
Fredericksburg, VA
JAG Offline
JAG  Offline
Joined: Oct 2005
Posts: 5,034
Fredericksburg, VA
Here is a thesis on the subject. I just started reading it.
https://tel.archives-ouvertes.fr/tel-01461622/document

Re: Significance of Ws2 (Tungsten Disulfide) [Re: JHogan] #4758273
05/15/18 09:30 PM
05/15/18 09:30 PM
Joined: Sep 2005
Posts: 14,354
Canada
addyguy Offline
addyguy  Offline
Joined: Sep 2005
Posts: 14,354
Canada
Castrol used to use it in GTX in the 1960's.

Weird that it is coming back so many years later.


2010 Kia Soul 2U - 2.0L I-4, auto; 133k miles.
M1 EP 10W-30; OEM Kia filter.
Re: Significance of Ws2 (Tungsten Disulfide) [Re: addyguy] #4758383
05/16/18 03:55 AM
05/16/18 03:55 AM
Joined: Mar 2013
Posts: 771
UK
weasley Offline
weasley  Offline
Joined: Mar 2013
Posts: 771
UK
Originally Posted By: addyguy
Castrol used to use it in GTX in the 1960's.


Castrol used "liquid tungsten", which is stated to have been long chain tertiary alkyl primary amine tungstate. Very different thing to WS2, which is akin to MoS2 in being a planar solid form.


2017 SEAT Leon 1.4 EcoTSI 150 FR Technology DSG
2018 Volvo XC60 D4
2011 KTM 990 SMT
Re: Significance of Ws2 (Tungsten Disulfide) [Re: JHogan] #4766332
05/23/18 09:00 PM
05/23/18 09:00 PM
Joined: Mar 2008
Posts: 6,001
Michigan
ZZman Offline
ZZman  Offline
Joined: Mar 2008
Posts: 6,001
Michigan


2003 Mercury Grand Marquis. PP HM 5w-30 and Fram Ultra
2008 Sebring Hardtop convertible. PP HM 5w-30 and Fram Ultra
2006 Kawasaki Vulcan 900 LT. Amsoil Metric 10w-40

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