Moly In Yer Motor Oil.......

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WMSmotorhead

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Ok, all over this board, I read about guys dumping Moly into their motors.... It's the "Hip New Additive". The odd thing is, many of the oils on the market already have it added.

To make things more interesting, a few of the motor oils in highest regard by some boad members have NO MOLY in them at all.

By these tables of 5W-30's....

Penz, Valvoline, and Castrol GTX ain't got none!

The usually less expensive Havoline, Mobil, and Exxon have a decent ammont.. and Shell has the Max allowed by the spec!

Major brand 5w30's
Even the wally world oil has got some.. looks like the same as the Exxon/Mobil stuff.
Private Labels
Even looking at some other "generics" like Warren and Gas Station brand... they have got some too.

Although I'm not trying to be hard nose, I don't get why LubroMoly is super hip to dump in your oil... and when I asked about another additive, I got the bronx cheer...

Why not buy a lower priced oil that already has the Moly in it??.. it's the max allowed by spec in the Shell, and it's usually not that expensive.

I know that LubroMoly is the super hip thing from Germany

"The Germans Always Make Good Stuff"--Shamwow Guy.
 
People will always think they can better off-the-shelf formulation by adding one thing or another to their crank case. Fads come and go... I guess moly is currently the favorite.
 
Th lubromoly type of moly (mos2) has a different chemical structure. First, there's not much in most normal oils, and two the different chemical structure allows more effective bonding to the metallic surface. The Mos2 then stays on the metal for the next few thousand miles even after an oil change to protect the parts.
Although this is not a main concern, if one were to lose all the oil in th sump, the moly would theoretically stay on the parts and protect them until you have a chance to pull over. It could even work in racing conditions when mild oil starvation occurs on hard corners
 
I really think Moly is over-hyped. As you stated many great performing oils have little to none and the engines running these oils wear well and last. I have also seen some UOA's on BITOG where wear goes up with an oil loaded with moly and previous UOA's where oil w/out moly was used the wear #s were lower. I know there are many other factors at play each OCI, but I am not extremely convinced it does a great deal of benefit to use moly additives or expensive oils w/ loads of moly in a great majority of passenger car applications. Just my 2 cents;)
 
There are a ton of people who have tried the Liqui-Moly MoS2 additive and claimed great results. LiquiMoly is a highly reputable company who produces very good oils, so it is reasonable to assume their additives are of high quality as well. My point being the worst case scenario is you waste a few bucks trying it out.
 
Quote:
"Hip New Additive"


Hardly new. Liqui Moly has been selling this stuff for decades.
The product has stood up to some pretty stiff testing and scrutiny by renowned testing labs and always had good results.

It still sells very well after all these years in a tough and crowded additive market. IMO that says a lot.
 
Moly is great stuff (antiwear and friction modifier that smoothes metal surfaces, increasing MPG and decreasing oil consumption, extreme-pressure additive that prevents scoring, and antioxidant) and certainly not new but it only works well in soluble organic forms, not the insoluble raw MoS_2 form that comes in Liquid Moly. Also, not all organic forms of moly have the same level of benefits -- different formulations of organic moly result in quite different effectiveness -- the best form being the organic trinuclear form (three Mo atoms per molecule) containing sulfur.

I think any good oil should have at least 30 ppm moly or so. There is no maximum limit, but more than 200 pm, which seems to be the optimal level, doesn't seem to provide additional benefits. Your best bet is to trust the additive package that comes with your oil, as the manufacturers try hard to find the best balance between moly, ZDDP (phosporus), boron, and other antiwear and friction-modifier additives. Unfortunately moly is somewhat expensive and manufacturers are also holding on before ILSAC mandates higher fuel economy (in GF-6), which would require more moly.
 
I have thought about adding a half a bottle of Lubromoly at the first oil change in my new car. I figure it might help in a new engine since many break-in oils have it.
Thoughts??
 
Originally Posted By: chevrofreak
What's the maximum allowed?


The 5w-30 spec says it's a max 226ppm. Shell is the only oil that contains that high of a value. Most are 150ppm or so.
 
I think the Toyota and Honda 0-20 have even more than max. I could be wrong. The new sn pyb has a good ammount now.
Originally Posted By: WMSmotorhead
Originally Posted By: chevrofreak
What's the maximum allowed?


The 5w-30 spec says it's a max 226ppm. Shell is the only oil that contains that high of a value. Most are 150ppm or so.
 
It's interesting, because the dump-in aftermarket stuff is a grey SOLID.. it's like the new slick50 or something. I'd prefer it to REMAIN suspended in oil rather than sleeping on the pan floor.
 
Originally Posted By: WMSmotorhead
It's interesting, because the dump-in aftermarket stuff is a grey SOLID.. it's like the new slick50 or something. I'd prefer it to REMAIN suspended in oil rather than sleeping on the pan floor.


If you referring to Lubro-Moly MOS2 additive, it's most certainly not a solid. The moly is suspended in an oil base and it stays in suspension. It doesn't 'sleep on the pan floor' at all and it stays in the flowing oil to coat engine parts. Comparing it to Slick50 is simply appealing to fear, uncertainty or doubt.

I poured half a bottle of it and half a bottle of ZDDPlus into a partial gallon bottle of Schaeffer 9000, shook it well and used it as top-up oil. Just did an 11 month / 30k km OCI (18k miles) and got back my best UOA ever.
 
Originally Posted By: WMSmotorhead
Ok, all over this board, I read about guys dumping Moly into their motors.... It's the "Hip New Additive". The odd thing is, many of the oils on the market already have it added.

To make things more interesting, a few of the motor oils in highest regard by some boad members have NO MOLY in them at all.

By these tables of 5W-30's....

Penz, Valvoline, and Castrol GTX ain't got none!

The usually less expensive Havoline, Mobil, and Exxon have a decent ammont.. and Shell has the Max allowed by the spec!

Major brand 5w30's
Even the wally world oil has got some.. looks like the same as the Exxon/Mobil stuff.
Private Labels
Even looking at some other "generics" like Warren and Gas Station brand... they have got some too.

Although I'm not trying to be hard nose, I don't get why LubroMoly is super hip to dump in your oil... and when I asked about another additive, I got the bronx cheer...

Why not buy a lower priced oil that already has the Moly in it??.. it's the max allowed by spec in the Shell, and it's usually not that expensive.

I know that LubroMoly is the super hip thing from Germany

"The Germans Always Make Good Stuff"--Shamwow Guy.



You are looking at the old SM formula, the new Pennzoil YB contains around 200 MOLY.
https://bobistheoilguy.com/forums/threads/u-o-a-2008-yaris-sedan-pyb-5w-30-sn-gf-5.154068/
 
How about you go back to the first page of this site, and read 'moly basics' - it will tell you why moly is a good additive in oil.

It's not some 'hip, new' additive - it's been around for a long, long while, although its use in automotive oil add-packs on really picked up steam with API SM.
 
I would say the new "hip" additive on this site is MMO. People speak about it like it is the universal God of awesome. Perfect for any task, be it an underarm deodorant, coffee sweetener, or engine cleansing tonic. MMO has you covered!
 
Originally Posted By: WMSmotorhead
Granted, someone dumped some in a transmission... but it doesn't sound like it stays suspended by these posts.


That was a transfer case which doesn't have a circulating pump. No 'chunks' or MOS2 'sleeping on the bottom of the oil pan' were evident when I pulled my drain plug and swept the pan with a rag on a screwdriver... just oil.

You seem completely anti-moly additive, which is fine if you wish to have that opinion. I'm anti-STP, motor honey, zMax, seafoam, MMO, kreen, etc... in my crankcase oil. There's no reason to try to clean what isn't dirty. OTOH, I like having the extra boost from a bit more moly & ZDDP, especially for the notoriously cam-grinding PD diesel engine.

You're free to add or not add whatever you want.
cheers3.gif
 
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