Mos2 dosing

Status
Not open for further replies.
Originally Posted By: KCJeep
Although not fanatically tracked, I noted a .5 to .75 mpg improvement when I used it.


Well, since this all started several months ago during the warm days of summer, my city fuel economy has dropped down into the 26 MPG range, but I'm now seeing overnight temps around 40 degrees, much of the time is spent with the defroster and A/C running, along with lights, and I'm plowing through water as it is our rainy season. I'm also enjoying the increased smoothness and am revving the engine faster overall.

It does seem like your numbers would be indicative of a HP or two decrease in friction during typical engine operation, assuming the math assumptions above are in the ballpark. Again, that doesn't seem that hard to believe, and a decrease in around a kilowatt of energy going into heat stress seems also to be in the ballpark.
 
Its that time again to see mpg decreases due to "winter" gas also.
frown.gif
 
Originally Posted By: ARCOgraphite
The proper does is ... NONE.
Colloidal (suspended powder)MoS2 is not used as an additive by any major oil co for a good reason. An believe me they WOULD use it if it provided mileage benefits AND the oil would pass ILSAC/API cert.


I previously pointed out that the 'is not used' part of this claim was simply not correct, and included links to a specific Lubro Moly product. But, I just stumbled upon another oil - Quaker State Ultimate Durability - which also uses Moly in the mix. Did I mention, it's ILSAC GF-5 certified?

How do I know this? Well, definitely not from the Quaker State product page for this oil which makes no mention of it. This bit of information came from Machinery Lubrication Journal which notes "The new full-synthetic additive package of Quaker State Ultimate Durability uses a proprietary moly formulation to help keep oil fresh, aiding fuel economy."

I report this not to gloat (well, not gloat too much) but because it highlights another problem. Namely, oil companies don't always advertise precisely what's in their additive package. Maybe they figure it's none of your business. Maybe it's proprietary information. Maybe they don't want their name or product bashed on BITOG by additive nay-sayers. Regardless, Quaker State is using the stuff but not broadcasting the fact. I wonder how many other oil companies are doing this?

---

In several threads regarding MoS2, I have suggested that one reason an oil company might not want to use MoS2 is that it turns the oil black (or at least very dark gray). Sounds silly, right? Maybe not. From another thread on this board...

Originally Posted By: Injured_Again
... I also used Arco Graphite motor oil back in the early 80's. I remember my dad asking why I would put something that black into the crankcase. I went on and on about all of the supposed advantages, but never did get him to try it just from that perspective.


After the Quaker State folks read this, they will probably pull the moly from Ultimate Durability - for sure, if the advertising department has any say in the matter!
 
You don't have anything to gloat over. You did not find an oil that uses MoS2. You found one of the many, many oils that use an oil soluble, organometallic form of molybdenum. Castrol and Kendall use an organometallic form of titanium. Organometallic tungsten has been used by various companies off and on.

The mechanism by which these organometallic compounds work in conjunction with the organic zinc compounds to form a low friction anti-wear layer on the metal is well known, documented, and fully tested.

Go to this link and scan across the Molybdendum row to see which oils contain Mo as part of their additive package.

http://www.pqiamerica.com/March2013PCMO/Marchsyntheticsallfinal.html

Ed
 
Originally Posted By: edhackett
You don't have anything to gloat over. You did not find an oil that uses MoS2. You found one of the many, many oils that use an oil soluble, organometallic form of molybdenum. Castrol and Kendall use an organometallic form of titanium. Organometallic tungsten has been used by various companies off and on.

The mechanism by which these organometallic compounds work in conjunction with the organic zinc compounds to form a low friction anti-wear layer on the metal is well known, documented, and fully tested.

Go to this link and scan across the Molybdendum row to see which oils contain Mo as part of their additive package.

http://www.pqiamerica.com/March2013PCMO/Marchsyntheticsallfinal.html

Ed



Liqui-moly/lubro-moly,the manufacturers of the mos2 additive in question in the thread produce a 10w-40 that uses the exact same moly compound found in the additive.
I've bought and used the oil so I know it exists. Its in a grey jug and very clearly states synthetic 10w-40.
I'm leaning towards the fact that the colour may turn people off and potentially scare them. Heck the first time I tried it I looked long and hard before pouring it in simply because of the way it looked.
Let's seriously consider how most of us in NA hold on to our wives tales and oil myths. It's almost a religion regardless what an oem says.
Now let's bottle up some grey lookin oil and now tell the consumer its fine,or use an invisible,cheaper organic type and tell the public nothing.
The oil still looks like oil. Let's also use the purple and blue examples out there and let's recall the many negative posts that those colours attract.
I think its purely because the masses would have a hard time accepting an mos2 infused oil en masse.


Originally Posted By: Finz
As I recall, the dosage was 50ml per liter of oil


I'm pretty sure you've got er.
Simple application rules. Any sump 5 litres or less use the whole can,then half a can per oil change after the first application.
From 5-7.5 litres use 1.5 cans,then a single can for every oil change after. I suggest using a syn and exchanging the intervals if using mos2. Get as much return as possible.


Originally Posted By: Sw296inchblue
So their is no difference? The 300ml bottle will plate a 1.4l
eng. and a 6.0L eng roughly the same?



Yes. The mos2 will plate everything it contacts under pressure,then once the parts are annealed the mos2 will just circulate until the layers previously applied wear off.
I've found in the many years using the stuff that I only had to go full strength the first time. Once the first full strength application has finished I've found only a half dose is required to maintain the engine running improvements whether it be smoother running,cooler oil temps,increased fuel economy etc.

Originally Posted By: Smokescreen
ARCOgrahite's issue with some oils & oil additives (MoS2, MMO etc) stretches back to at least 2009 folks. Do a search for yourselves, but for one reason or another he has had several engine issues, or noises from different engine manufactures some to which just oil or oil additives he has attributed the source. No one else on here has been able to find any supporting evidence as to why his issues exist. It's the internet and we are all allowed to post our opinions.

Back to the thread....

The truth of the matter is on the topic of MoS2, it flows through the filter media freely. It can't & won't cause oil pressure issues. It works as advertised promoting engine smoothness and quietness. It may/may not contribute to increased fuel economy depending on your specific engine condition, it may/may not solve all your engine woes (stuck rings, blow-by etc), but it does work as advertised.



The second paragraph in this quote should be copied and pasted in every mos2 thread from now til eternity.
The stuff performs as advertised. Many of us observe different running condition improvements and we mention these improvements HOWEVER liqui-moly doesn't make the claims many of us observe. So at times the product gets shot down because of what some of US have observed however liqui-moly has never made some of the claims that we as users do observe.

So to conclude I'll just parrot that beauty paragraph above and confirm the product works exactly as the manufacture advertises,and in my experience with all liqui-moly products I've used the entire company's products perform exactly as ADVERTISED BY THE MANUFACTURER.
Many of us users observe other benefits however not every user also observes these benefits so if the advertising doesn't claim a particular function its possible the product will do it however its not guaranteed.
What they are assuring the consumer is that I performs as advertised.


Originally Posted By: demarpaint
Originally Posted By: dave5358
Originally Posted By: Smokescreen
The truth of the matter is on the topic of MoS2, it flows through the filter media freely. It can't & won't cause oil pressure issues. It works as advertised promoting engine smoothness and quietness. It may/may not contribute to increased fuel economy depending on your specific engine condition, it may/may not solve all your engine woes (stuck rings, blow-by etc), but it does work as advertised.


+1


+2 Well said.


And a +3 right here.
We in the forum here have observed some significant changes in engine operation while other members have observed no changes or in 1 case a member claimed engine failure because mos2 started a chain reaction,a claim which I find absurd based on my many years using the product in a plethora of cars,trucks,bikes,vans,diesels and gasoline powered.
A couple of those example were breathing their last breath yet not one engine failure,even though failure was imminent.

Originally Posted By: Injured_Again
I think from my sound level testing that, in the absence of any mechanical changes, the reduction in noise almost certainly signifies some reduction in friction. The real question is, does the amount of friction reduction cause a statistically significant in fuel economy.

In the case of my Miata, fuel economy has increased by 5-8% in steady state freeway operation, to about 35 MPG at 70 MPH. So, let's see if I can do some rough math correctly.

One gallon of gasoline contains approximately 120000 kilojoules of energy. I'm using two gallons per hour, 240000 kj total. A 5% decrease means saving 12000 kj over 7200 seconds, which is 1667 watts or 2.36 horsepower.

That seems reasonable to me that the Miata's 1.8 liter engine, spinning at 3500 RPMs, requires 2.36 hp less to overcome inherent friction minus whatever benefit I got from better cylinder/ring sealing.



Very interesting calculation.


Originally Posted By: Smokescreen
...by that math, you can mod an engine by moving to MoS2 providing the same gains as most aftermarket mufflers or intakes...LOL

I noticed no change in fuel economy.


Some folks observe no change in fuel consumption,others see a significant consumption decrease.
My commute is all highway on flat roads at 70mph. I drive in traffic for mere moments.
When in a city type driving environment I observed no change whatsoever in fuel consumption however when I tracked consumption over 3000 highway miles and compared the mos2 treated figures to the just oil consumption figures,and factor in lower oil temps which I also observed while being on the highway was confirmation enough for me.
In the city there was no measurable difference,the highway coupled with mds nets my charger over 30mpg if I'm not driving into a headwind.
If I draft a pick up truck I've seen mpg figures as high as 36mpg. All these figures blew me completely away.
I cannot come anywhere near those numbers without mos2. I tried on this oci just using cera-tec and my mileage fell off to less than my established baseline that I monitored when I first bought the car.
After 5000 miles into this interval I added mos2,roughly 1000 miles ago and again my mileage is creeping up again.
I'm beyond trying to convince anyone of the merits of using mos2 in their engines. The stuff costs 8 bucks. For many of us the 8 bucks is re-coup'd within the first tank of fuel,others observe higher cylinder compression pressures as well as tail pipe a smaller "puff" of burning oil or complete elimination of it.
It's a great product and I'm confident in its merits. As far as new users are concerned all I can say is try it. It costs 8 bucks and I'm absolutely positive its not going to do any harm.
Mos2 will perform as advertised. All other claims are user experiences so they may or may not apply however rest assured the manufacturers advertised claims are a piece of cake.
 
Nice write up Clevy. As they say you can lead a horse to water... My most noticeable improvements were with a mower, which I mentioned several times in various threads. The positive results have been going on for years now as long as MoS2 is in the engine. I will continue to use it.

The dark color of the product as it pours out can be frightening to some people and might be a turn off to the major oil players. It might cost more than other forms of Moly too. I can't confirm nor deny that. On a positive note, oil treated with it is very easy to see on a dipstick. As with any additive there will always be a line drawn in the sand, those clearly for it, those against it. Unfortunately many times those against it never tried it.
 
Originally Posted By: edhackett
Go to this link and scan across the Molybdendum row to see which oils contain Mo as part of their additive package.

http://www.pqiamerica.com/March2013PCMO/Marchsyntheticsallfinal.html


Ed: Thank you for that link - it's a gold mine of information - most of which is simply not reported by the oil makers. Since the information at this link appears to be taken from an oil analysis (presumably not a used oil analysis ;-), would molybdenum disulfide report differently than an organometallic form of molybdenum?

I also note that they had no line for tungsten. Is it not a standard item tested in an oil analysis?
 
Originally Posted By: ARB1977
After adding a can it took a qrt of oil to get the remaining residue. It's amazing how much coating there is.


In another solid lubricant thread, Mola Kule said:

Quote:
Here is my problem with dry lubricants such as powdered moly, titanium, and Tungsten being introduced into a crankcase: Unless the dry lubricant is specially processed into a colloidal system with polarity additives, the dry lubricant may fall out of suspension and may not attach itself to friction surfaces, . . .


It seems to my uneducated eye that the tenacity the MoS2 sticks to the container is indicative that it won't fall out of suspension and agglomerate in the oil pan, and the particle size shows it won't get caught in the filter.

That being said, the opacity of the oil with MoS2 steadily decreased for the first few thousand miles of use, though I also got increasing benefit during that time. Even now, 4000+ miles into using MoS2 in this oil, it still feels as though the smoothness of operation continues to improve, though now the oil has enough particulates so I can't easily see if the MoS2 is as prevalent. I'm due for an oil change soon and will put a full dose of it back in, and will continue to run at full dosing until the improvements seem to stop. But it's not absolutely clear if the reduction of opacity is because it's being plated to the engine or if it is agglomerating somewhere.
 
Originally Posted By: dave5358
Originally Posted By: 95busa
If that stuff worked OEM would use it to beat CAFE. Waste of money.


If MoS2 worked to increase fuel economy, OEM might use it, etc. I don't recall anyone in this thread suggesting that it did increase fuel economy. In fact, from a previous message, "Mileage benefits of MoS2 may exist but are not well documented".



There is a thread that suggests just that. A locked thread at that.
 
Originally Posted By: Trajan
Originally Posted By: dave5358
Originally Posted By: 95busa
If that stuff worked OEM would use it to beat CAFE. Waste of money.


If MoS2 worked to increase fuel economy, OEM might use it, etc. I don't recall anyone in this thread suggesting that it did increase fuel economy. In fact, from a previous message, "Mileage benefits of MoS2 may exist but are not well documented".


There is a thread that suggests just that. A locked thread at that.


From yet another thread, many major oil companies are including Molybdenum in their additive package, but not necessarily MoS2 (it's really hard to tell the exact form of moly in use). Various reasons are cited by the oil companies, including increased fuel economy.

Regardless of the exact formulation of the molybdenum, at least one forum issue may be precision of measurement. If MoS2 (or any additive, for that matter) increased the fuel economy by 1 mpg, it would be very hard to measure this with a 1-vehicle sample. A fleet could test a product and, if the test were properly structured, could detect a 1 mpg improvement. To a fleet or an individual, an honest 1 mpg improvement should be a big deal.
 
I added 1 full bottle to the sump of my BMW 328ti about 1500 miles ago. Hard to tell fuel economy differences yet, as I JUST noticed a dip due to winter fuel. Will keep going and see what happens. Same for trying to tell if there's a difference in power - its cold out now, LOL.


As far as those talking about loosing oil pressure - for those of us that go to the track or autox, sustained high-g cornering can infact cause oil starvation - even on street tires. It's definitely happened to me before. Never had an engine issue because of it, thankfully, but the oil light has usually only come on for 1-2 seconds too. I haven't had a vehicle quite fast enough yet to require a dry sump or an Accusump (although my LS swapped Volvo WILL get an Accusump next summer). We just run the BMW's a quart over full at the track, that really helps mitigate a majority of the issues for most of us that aren't on slicks. I know just at an autox I get a [censored] of a lifter tick in the current car if I don't over-fill the oil. Will be interesting to see how the car reacts next spring with MOS2.
 
Last edited:
Originally Posted By: KenO
As far as those talking about loosing oil pressure - for those of us that go to the track or autox, sustained high-g cornering can in fact cause oil starvation - even on street tires. It's definitely happened to me before. Never had an engine issue because of it, thankfully, but the oil light has usually only come on for 1-2 seconds too.


The one forum user who complained about losing oil pressure implied that a clogged oil filter was the reason. There was no follow-up or confirmation (such as opening the filter). Because of the particle size of Lubro Moly (the product he was using) a clogged oil filter seems unlikely. And, it is unclear if he actually lost pressure or simply had the oil light come on. The user had an older Honda with a V-Tec engine - variable valve timing. This is significant because oil pressure measurement on his vehicle (and similar vvt systems used by Toyota) is done north of the camshaft. The oil pressure light can be triggered by using oil which is too heavy to properly flow through the variable valve timing mechanism. While any oil pressure light should be unsettling, it's quite unclear that Lubro Moly was to blame.

As for losing pressure or oil starvation because of hard cornering or similar activities, you are certainly no worse off with MoS2 in the soup, but it doesn't stop the oil from sloshing about. You may be much better off due to the plating effect of MoS2 - but will get somewhat less plating benefit from soluble moly.
 
I used 1.5 cans in my 95 BMW 525i (233,000 miles)in a 6 quart sump. Believe I used it at the recomended rate. Engine is quieter especially on a cold staart. That's enough for me.
 
I have finally been able to log on to BITOG. For some reason.

This thread is very educational.
I added 1 can of LubroMoly to my 2011 Toyota V6 filled with Eneos 5w30 yesterday. I must admit I was at first fearful of adding the additive, this thread lead me to believe in the efficacy of the Moly. I warmed the engine up and then added the can and drove the car for a few miles. I ususally drive it on the weeekends and hate starting it up cold after it sits for a week, hence the Moly for those weekly, cold starts. I
appreciate and welcome all comements.
 
Status
Not open for further replies.
Back
Top Bottom