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Ceratec and Mos2 Discussion #5278118 11/26/19 05:05 PM
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DV0993 Offline OP
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Reviving an old topic perhaps.

I was having a discussion with some friends. We all swear by Mos2 and use it in our mowers, daily drives and sports cars. I personally have noticed an improvement in smoothness and fuel consumption by using mos2.

Keen to hear everyones experiences.

Anyhow, my friend's mechanic mentioned that Ceratec is better for alloy blocks, whilst mos2 is better for cast iron blocks? Is there any validity to this statement?

For the record, I add half a bottle to my s2000 (but only when im not using a group IV oil) and half a bottle to my diamante (which uses conventional).

Re: Ceratec and Mos2 Discussion [Re: DV0993] #5278121 11/26/19 05:07 PM
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Ceratec?.. never heard of her.😉

Re: Ceratec and Mos2 Discussion [Re: DV0993] #5278178 11/26/19 06:09 PM
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demarpaint Offline
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A well respected member, Trav posted pictures of MoS2 settled in the bottom of an oil pan after he dropped the oil pan. Others had similar experiences, especially in vehicles that are not driven everyday. The product can and does fall out of suspension, and judging by the pictures I saw it didn't go back into suspension even after starting the engine and moving the car to where it was going to be worked on. As a result I wouldn't use it. Trav also mentioned Ceratec doing the same thing in an air compressor if memory serves me correctly.


God Bless Our Troops

Re: Ceratec and Mos2 Discussion [Re: DV0993] #5278188 11/26/19 06:23 PM
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Kamele0N Offline
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Funny.....because I put a tad of LM MoS2 in my bike chain oil......and even after standing a year on the shelf that oil is still grey from the bottom to the top smile

May it be that Trav was playing with some MoS2 in powder he ordered somewhere on the internet.....

Last edited by Kamele0N; 11/26/19 06:25 PM.

2008 Toyota Yaris 1ND-TV 1.4 D4-D Tech9 (Shell?) 5W30 C3 VW 504/507
1997 Toyota Landcruiser KZJ95 3.0 TD Shell Rimula R6M 10W-40
Re: Ceratec and Mos2 Discussion [Re: demarpaint] #5278226 11/26/19 07:08 PM
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DV0993 Offline OP
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Originally Posted by demarpaint
A well respected member, Trav posted pictures of MoS2 settled in the bottom of an oil pan after he dropped the oil pan. Others had similar experiences, especially in vehicles that are not driven everyday. The product can and does fall out of suspension, and judging by the pictures I saw it didn't go back into suspension even after starting the engine and moving the car to where it was going to be worked on. As a result I wouldn't use it. Trav also mentioned Ceratec doing the same thing in an air compressor if memory serves me correctly.


I have read these posts - Maybe its placebo, but I have observed nothing but benefits. Have also ran it in my 2 stroke mower (started 2 weeks apart). The fuel was still grey (i.e the moly hadn't separated to the bottom of the fuel tank).

Re: Ceratec and Mos2 Discussion [Re: DV0993] #5278229 11/26/19 07:12 PM
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tundraotto Offline
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Originally Posted by DV0993
Originally Posted by demarpaint
A well respected member, Trav posted pictures of MoS2 settled in the bottom of an oil pan after he dropped the oil pan. Others had similar experiences, especially in vehicles that are not driven everyday. The product can and does fall out of suspension, and judging by the pictures I saw it didn't go back into suspension even after starting the engine and moving the car to where it was going to be worked on. As a result I wouldn't use it. Trav also mentioned Ceratec doing the same thing in an air compressor if memory serves me correctly.


I have read these posts - Maybe its placebo, but I have observed nothing but benefits. Have also ran it in my 2 stroke mower (started 2 weeks apart). The fuel was still grey (i.e the moly hadn't separated to the bottom of the fuel tank).


It's supposed to be added to the oil!?! Not the fuel......

Re: Ceratec and Mos2 Discussion [Re: tundraotto] #5278241 11/26/19 07:23 PM
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tcp71 Offline
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In a 2 stroke the oil is mixed with the fuel.


2016 F150 Eco: Edge 0w40
2005 Sienna 3.3: PP 5w30 syn. (varies)
Re: Ceratec and Mos2 Discussion [Re: tcp71] #5278248 11/26/19 07:30 PM
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PimTac Offline
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Originally Posted by tcp71
In a 2 stroke the oil is mixed with the fuel.



Right but adding moly or ceratec to the fuel mix is probably not a wise thing to do.


2017 Mazda CX5
Mobil 1 Annual Protection 0w20
Roki OEM filter.
Re: Ceratec and Mos2 Discussion [Re: DV0993] #5278250 11/26/19 07:33 PM
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Kamele0N Offline
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Its how its aplied to 2strokes...


2008 Toyota Yaris 1ND-TV 1.4 D4-D Tech9 (Shell?) 5W30 C3 VW 504/507
1997 Toyota Landcruiser KZJ95 3.0 TD Shell Rimula R6M 10W-40
Re: Ceratec and Mos2 Discussion [Re: Kamele0N] #5278272 11/26/19 07:52 PM
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tundraotto Offline
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Originally Posted by Kamele0N
Its how its aplied to 2strokes...


Good luck with your sparkplugs 'molyed'. Sounds asinine.

Re: Ceratec and Mos2 Discussion [Re: tundraotto] #5278287 11/26/19 08:12 PM
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DV0993 Offline OP
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Haven't had any issues. In fact the mower starts easier and is quieter. IMO

But more importantly, I'm interested in the automotive applications.

Re: Ceratec and Mos2 Discussion [Re: DV0993] #5278318 11/26/19 08:51 PM
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JHZR2 Offline
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I love the concept of MoS2 in oil.

But in practice? Meh.

I shared pics from our VW oil filter, which had ceratec agglomerated in it. That kind of did it for me.

I also derived mathematically the settling time for particles based upon established analytic work.

https://www.bobistheoilguy.com/foru...-particle-mos2-settling-time#Post2407575

Settling could be as fast as two weeks, or as long as three months, roughly...

Re: Ceratec and Mos2 Discussion [Re: DV0993] #5278356 11/26/19 09:25 PM
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DrDanger Offline
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Posting a link to my favorite thread on here
https://www.bobistheoilguy.com/forums/ubbthreads.php/topics/4853520/2

middle of page 2 .. old study but still...

Here are the results. 600 ppm dinuclear moly with ZDDP (Blend 5) did best both in friction and wear. Note that it has the highest sulfur with 2,000 ppm (0.2%), which is at the ACEA C1 and C4 limit and close to the C2, C3, and C5 limit (0.3%).

So a healthy dose of good old MoS2 is proven to work. No placebo.
Dont expect miracles, sometimes it can take a lot of driving to notice any difference and if you take good care of the engine you may not notice anything at all.
Does not mean your wear/friction numbers arent better.
I also add a bit (10% of fill) of Magnatec Stop Start formula but thats just me.

Last edited by DrDanger; 11/26/19 09:35 PM.
Re: Ceratec and Mos2 Discussion [Re: DV0993] #5278481 11/27/19 12:29 AM
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I run recommend Archoil 9100 over either of these products listed above if you want solid boundary lubrication. Ester based vs LiquiMoly mineral base and in a 16 ounce bottle that four ounces treat roughly 4 qts. I'm now using Lubegard Biotech with M1 0w30 and it runs well.


15' Civic r18, 344,000 mi M1 5w30(3qt)/Redline 5w30(1qt),Castrol CVT Fluid,Redline Si-1
Doberman Whisperer! Honda/Acura nerd; detest ethanol,wind,"green" ,solar & vegan.


Re: Ceratec and Mos2 Discussion [Re: Kamele0N] #5278532 11/27/19 04:54 AM
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demarpaint Offline
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Originally Posted by Kamele0N
Funny.....because I put a tad of LM MoS2 in my bike chain oil......and even after standing a year on the shelf that oil is still grey from the bottom to the top smile

May it be that Trav was playing with some MoS2 in powder he ordered somewhere on the internet.....

No it was LM Mos2


God Bless Our Troops

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