Effect of Lubro Moly on Cleaning?

[Techniker]

I have a few questions about Lubro Moly that have been in the back of my mind for a while now. All responses would be greatly appreciated:

1) I am planning on changing over to Pennzoil Ultra as my new oil of choice for its cleaning properties. Does Lubro Moly affect/interfere with cleaning by the oil due to the molybdenum plating on the surface of the engine?

2) Is there any harm in adding an entire bottle of Lubro Moly with each oil change? Will there be any eventual buildup/will it cause additional wear?

3) Everytime I add Lubro Moly, it goes into suspension and appears gray on the dipstick as it should. After a while though, it disappears from solution. I understand the idea that it is plating onto the surface of the engine, but shouldn't that have stopped happening a while back since I have been adding an entire can at every oil change? Where is it all going? Is it just being picked up by the oil filter (though I also understand that the moly should be too small for the filter to pick up)?

I am using a Fram Toughguard filter by the way on 2500 mi. oil change intervals. This was a neglected engine and I have been trying to clean it up.

Thank you in advance,
Techniker

 

[zyxelenator]

I beliave that the Moly that was not used for plating, just gets drained with oil. I also think it is better to clean first. Moly might and I think will cover deposites or sludge with slick protective layer, and it will be harder to wash it off. Try their Proline flush, before next drain, and then continue your plan.

 

[zyxelenator]

I beliave that the Moly that was not used for plating, just gets drained with oil. I also think it is better to clean first. Moly might and I think will cover deposites or sludge with slick protective layer, and it will be harder to wash it off. Try their Proline flush, before next drain, and then continue your plan.

 

[Falcon_LS]

Originally Posted By: Techniker
1) I am planning on changing over to Pennzoil Ultra as my new oil of choice for its cleaning properties. Does Lubro Moly affect/interfere with cleaning by the oil due to the molybdenum plating on the surface of the engine?


MoS2 does not upset the chemistry of the oil, so it will not affect the oil's ability to clean.

Originally Posted By: Techniker
2) Is there any harm in adding an entire bottle of Lubro Moly with each oil change? Will there be any eventual buildup/will it cause additional wear?


It is recommended that you use one can (300 ml) of MoS2 for 5 liters of oil. If you have an 8 liter slump capacity, for instance, there is no problem using 2 cans (600 ml), but don't go adding 2 cans to 5 liters. Adding less than the recommended amount will have a very little affect, making it pointless.

MoS2 will not cause any additional wear or build up.


Originally Posted By: Techniker
3) Everytime I add Lubro Moly, it goes into suspension and appears gray on the dipstick as it should. After a while though, it disappears from solution. I understand the idea that it is plating onto the surface of the engine, but shouldn't that have stopped happening a while back since I have been adding an entire can at every oil change? Where is it all going? Is it just being picked up by the oil filter (though I also understand that the moly should be too small for the filter to pick up)?


MoS2 mixes with the oil and remains in suspension, it does not plate the surface per say. It fills in the inconsistencies, such as between the piston rings and the cylinder wall. Here is a video, which I hope will be helpful:



When the oil is drained, the MoS2 will be drained with it, and unless you add product again, what is left behind will not have much effect.

If you use a product like Cera Tec, which contains boron nitride, it will plate itself to the metal surface and its effect will last for 50,000 km (31,250 miles).

 

[vintageant]

YouTube video is for Liqui Moly. European? Is it called Lubro Moly in the USA?

Is this it?

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=270662670737&viewitem=&sspagename=STRK%3AMEWAX%3AIT

 

[Vikas]

Yes, it is called Lubro Moly in USA

 

[Falcon_LS]

Liqui-Moly is a registered trademark in the US, hence the name Lubro-Moly for the American market.

 

[ltslimjim]

I had similar questions as the OP. I've yet to use this in my Civic(a full dose anyway). I don't believe it's ideal to waste it in short OCI's if those are for cleanup purposes; catching up on maintenance etc.

On the other hand, if it's supposed to "plate" along metal surfaces that doesn't mean it will cake onto carbon/gunk/varnish etc first so I doubt it interferes any with cleaning, just kind of a waste in that scenario of shortened OCI's, IMO.

 

[JHZR2]

I wonder if the fine particles could clog oil leaks?

 

[steve20]

Originally Posted By: zyxelenator
I beliave that the Moly that was not used for plating, just gets drained with oil. I also think it is better to clean first. Moly might and I think will cover deposites or sludge with slick protective layer, and it will be harder to wash it off. Try their Proline flush, before next drain, and then continue your plan.



Are you out of your mind?

 

[demarpaint]

Originally Posted By: JHZR2
I wonder if the fine particles could clog oil leaks?


I was thinking along those lines myself. I think it could help with a small leak. I was looking at how it collected around the threads of the drain plug on my mower and based on that think it might help with small leaks. JMO

 

[HTSS_TR]

Originally Posted By: vintageant
YouTube video is for Liqui Moly. European? Is it called Lubro Moly in the USA?

Is this it?

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=270662670737&viewitem=&sspagename=STRK%3AMEWAX%3AIT

You can buy the exact same MOS2 bottle at NAPA for $4.xx + tax.

 

[Falcon_LS]

Originally Posted By: JHZR2
I wonder if the fine particles could clog oil leaks?


The particles are fine enough to pass through the oil filter without clogging it, so I would doubt its abilities to clog oil leaks.

 

[JHZR2]

Seepage through a seal is far slower and far smaller holes. Otherwise the leaks would be at the same ind of rate as oil passing through filter media, far faster.

 

[Steve S]

The additive "plating" is not a permanent a layer plates up then it is wiped off when the oil layer is scraped off. The moly Zinc etc. works in the high pressure, friction areas like the cam and valvetrain the cyls and piston rings for example

 

[Techniker]

Originally Posted By: Steve S
The additive "plating" is not a permanent a layer plates up then it is wiped off when the oil layer is scraped off. The moly Zinc etc. works in the high pressure, friction areas like the cam and valvetrain the cyls and piston rings for example


So continue using it along with my Pennzoil Ultra during cleanup phase...?

 

[Falcon_LS]

In short, yes.

 

[ltslimjim]

Guys, not to get OT, but really...would adding a can of this to my old Civic harm an extended OCI in any way? I don't think it would mess up the formula in a bad way, just curious. I've got the new AZO 0w30 in now, it has around 125 ppm of soluble moly.

 

[Falcon_LS]

No harm whatsoever, you can run it for as long as the oil is in service with no ill effects.

 

[JHZR2]

I put a can in my 82 300CD turbodiesel today. Not sure if it was smoother or quieter, but it did seem to have a bit less shake at idle...