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MB Silicon Paste - the Holy Grail

I'm seeing Gleitpaste (500g tub) at Naperville for $68 ($92 list):
https://www.mboemparts.com/oem-parts/mercedes-benz-paste-0019894651

The small 100g jar of wunder-silicone shows as $53 however it is NLA:
https://www.mboemparts.com/oem-parts/mercedes-benz-silicone-paste-0009898451

I just found ECSTooning offers small amounts of Gleitpaste sunroof lube for $10, for those who don't want a lifetime fleet supply:
https://www.ecstuning.com/b-genuine-mercedes-benz-parts/sunroof-lubricant-half-ounce/0019894651~a/


Remember, the MB dealer sites rarely remove an item from their catalog when it goes NLA. If you're lucky they'll add a "Discontinued" note (click here to see an example), otherwise they'll take your money and cancel the order a week later (like 4x4 club did to Jon in post 47+48).

:oldster:
 
Thank you -- yes the move went smoothly.

I just recently unpacked my Gleit, Silikon, and SylGilde among other lubes. All made it fine to the East Coast and are safely sitting in my garage chemicals cabinet.

I actually used the Gleit recently on Laura's 4Runner sunroof rails. Dunno if Toyota makes a similar thing to da' Gleit, but I figured what is good enough for the goose, is good enough for the gander.

Most everything is now unpacked, and just going through the last few items that got immersed in flood water back at the end of August. I had to throw out a few 124 window switches and a few dozen small/odd MB rusty nuts/washers/bolts/hardware, but those were outlyers and my collection of dozens of other spare 124 & 126 dashboard, console and window switches survived just fine, as they were in a third-floor storage unit during the flooding.

Cheers,
Gerry
 
Basically, a silicone grease has non-petroleum components. Most grease is petroleum based and will promote the rapid deterioration of rubber and plastics. Silicone grease is used where you have rubber to metal contact, I.E. rubber boots, sway-bar bushings, and many suspension joints. Also, I use Dupont's Teflon spray on my suspension joints where a grease can't penetrate without disassembling.

I hope this is helpful,
Mike Memphis, TN
 
Is this the stuff they put into the wheel bearings during servicing? I recall seeing a similar paste when I had Service B done on my W463.
 
Is this the stuff they put into the wheel bearings during servicing? I recall seeing a similar paste when I had Service B done on my W463.

I hope not! That is high temp wheel bearing grease. Green stuff.
I do not believe that the green MB wheel bearing grease is what is specified for G-wagen wheel bearings. Though it is for civilian passenger vehicles.

For G-wagen swivel balls and wheel bearings, recommended grease is Fuchs Renolit MP 150 bearing grease, or the MB-packaged version, which comes in tubes part number 001 989 34 51 11, or in larger tubs part number 001 989 34 51 10.

The silicon paste DEFINITELY is not spec'd for any type of bearing or metal lubrication. Its purpose is very very different than that.
 
MB not so long ago reduced the amount specified, from 800 grams per swivel ball, to 500g per ball.
 
Correct. That's a fillup from empty. If you're not losing a lot out of the swivel balls, then you probably don't need to add much.

Some folks in the past have used RedLine red grease, but it has proven to be very watery and thin for the application (though I'm sure an excellent grease). The Fuchs RenoLit is very difficult to get in the US, but it can be had if you know where to look. It's good stuff, and if you buy it in the Fuchs grease gun cartridges, it's much cheaper than if you get the MB-branded Fuchs.
 
Newby here. I actually found this forum thru this thread.............. you guys are a breath of fresh air compared to where im used to lurking.

So I was wondering, with the MB "Silikonpaste" now NLA, has a worthy replacement been confirmed? Or in the alternative, what is the chance one of you guys has access to the MSDS/SDS sheet on the stuff. We might just get lucky and find the true manufacturers product name on there.

I have a squeaking second row console lid on my W251 and a creaking top on my r171 that are both crying for that stuff. I stand ready for a beat down for not owning a W124.
 
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Found some of the Silikon Paste at a stealership in Tx! I got all excited...

...until they told me not only did they want $115 for it but they won't ship it because they called it "hazardous materials."

As much as I like the Lone Star state, I'm not driving from Florida for it. Hateful.

No progress on the MSDS sheet either... I'm not one to give up easily but this is ridiculous.
 
Let someone here on the forum know where in Texas, I'm sure they would pick it up for you and send it to you.

When it was available, the last listed list price was $72, discounted to around $55.
 
Last ditch effort to avoid dumping over a C note on 3.5 oz of "Wunderpaste."

After a bit righteous finagling I was able to secure the MSDS sheet for this mystery jiz. Turns out it is a simple mix of Silicone oil with Lithium soap (which is apparently a fancy way of saying white lithium grease) as a thickener. Google searching these two terms brought me to a couple of product that has similar contents. One might actually be superior (if that's even possible) as it also contains molybdenum.

The product is MicroLubrol M-77. Two oz is $12. Apparently it contains over 60% molybdenum disulfide lubricating solids in a lithium soap thickened ultra-high performance silicone fluid.

http://www.microlubrol.com/MicroLub...ste-Grease-Silicone-Molybdenum-2-oz-57-g.aspx

APPLICATIONS:
- A running-in lubricant for new or rebuilt equipment including gears, splines, journal bearings, cams and ways.
- An assembly lubricant to reduce torque in fastening and unfastening of threads and bolts, minimize tension variation in bolts, facilitate assembly and disassembly and help prevent damage to threads.
- Press-fitting lubricant to allow press fitting without chatter or stick-slip that reduces the fit force pressure required for interference fitting and minimizes distortion.
- General-purpose lubricant for bearing shafts, bushings, splines, O-rings, packings and seals (except silicone rubber).
- Assembly applications where high temperature is a factor.
- Lubricating during running-in of gears, splines, journal bearings, cams; reducing torque in tightening threads and bolts; lubricating bearing shafts, O-rings, packings and seals, brake assemblies; press-fitting. - Metal/metal combinations with frictional and contact surfaces, brake anchor plates, and the brake pistons of disc brakes.
- Suitable for lubricating parts consisting of materials that are not resistant to mineral oils.
- Paste lubrication up to 230ºC (446ºF). Dry lubrication up to 400ºC (750ºF).
- Good water resistance. Good volatilization properties.

SAME INGREDIENTS AND PROPERTIES AS DOW CORNING® MOLYKOTE® M-77:
- Over 60% Molybdenum disulphide, CAS# 1317-33-5
- Dimethyl, phenylmethyl siloxane, trimethyl terminated, CAS# 63148-52-7
- 12-Hydroxy lithium stearate, CAS# 7620-77-1
- Same black-grey color

MicroLubrol also sells a product called Ultimox, an ultra-high quality PFPE/PTFE grease formulated with fully synthetic highly fluorinated perfluoropolyether oil and micronized polytetrafluoroethylene (PTFE) with the same uses as Krytox GPL-205 and GPL-206.

APPLICATIONS:
- Eliminates squeaks, judder and sticking of rubber seals and weather-stripping in convertible tops, trunks, hatches and doors.
- Eliminates squeaks, rattles and other noise due to vibration and rubbing of rubber and leather, plastic and rubber, and metal and plastic/rubber parts including console parts, facia and trim panels, seats.
- Lubricates spark plug boots.
- Side view mirror mechanisms.
- Windshield wiper mechanisms.
- O-ring seals

http://www.microlubrol.com/MicroLubrol-Ultimox-226-Perfluoropolyether-PFPE-PTFE-Grease-20-g.aspx

They also sell a comparable product to the 1 oz Krytox GPL-105 ($35) that Merc somehow gets $60 for by assigning pn# 000-989-36-60 and calling it Spezial-Gleitmittel Fluid. This is the mystery fluid Merc has you put sparingly on your sunroof mechanism along with the Gleitpaste and on creaking roof/door seals. MicroLubrol calls it simply ATD Auto Top & Door Rubber Seal Lubricant Oil and gets $27 for it.

http://www.microlubrol.com/MicroLubrol-ATD-Auto-Top-Door-Rubber-Seal-Lubricant-Oil-30-ml-57-g.aspx

APPLICATIONS:
- Retractable convertible roof top rubber seals
- Sliding convertible roof top rubber seals
- CSC (Coupe/Sunroof/Convertible) retractable/sliding roofs
- Sunroof and moonroof rubber seals
- Door rubber seals
- Power window rubber seals
- Hatch and trunk rubber seals


Wuerth, a German based manufacturer also sells a Polydimethylsiloxane based silicone grease in an aerosol but they don't disclose if what is being used to thicken it is mineral or lithium based.

I'm open to consider any factually based comments or even personal biased opinions of no actual worth on this subject. With more and more annoying little squeaks from my second row console lid on my R class and the creaks from rubber seals of the Vario roof flexing around on my SLK I have to settle on a solution...

AAAArgh! I'm almost annoyed enough to work thru getting the stuff in Texas.

And if anyone was wondering, I also got the MSDS for Gleitpaste. It is a completely different product consisting of mineral oil, synthetic hydrocarbon oil, and special lithium soap. Since this stuff can be purchased a few oz at a time for under $20, there isn't really much sense trying to track down who makes it.
 
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Is it not proper only & exclusively to use MB-branded "mystery jiz" on our cars ?!?

When High Command went AWOL with this stuff, us ground pounders were just left to our own devices...

So it looks like I may have found the actual Mercedes Silikon Paste product. Clearly I have nothing more pressing in my life but to research discontinued Mercedes lubricants. Damn the bills, this is far more urgent.

Unlike the MicroLubrol M-77 product I found yesterday that contains a hefty percentage of molybdenum disulphide in addition to the silicone oil and lithium soap (and is black/grey in color), I found two products today that look much more promising. TDS on them list the only ingredients as silicone oil and lithium soap. And both show it as lightish brown in color, same as the Merc product. So I'm presuming another match there.

The first is Calsil Grease 55 marketed by a company in The Netherlands called Caldic BV under their Calsil brand. The TDS shows it contains Polysiloxane methylphenyl fluid (silicone oil) with lithium soap, so that matches Merc's MSDS product composition description of a mixture of silicone oil and lithium soap. However the Calsil brand was launched by Caldic in 2013. That's not to say they weren't manufacturing it before then under the Calsil brand, just something to throw a curve at the research.

The other is from Elkem Silicones, a company out of Norway owned by BlueStar Silicones (ChemChina) with manufacturing locations all over Europe. They call it Bluesil GRS 55.

Both of these appear (based on the similarities of each of the products TDS sheets) to be the same or very close to the same product, just like the the last two Lubrizol products I found yesterday were basically knock offs of Dupont's Krytox GPL 105 & 205 .

So with any luck, one of these is Merc's "Silikonpaste." Both of these companies appear to have stateside headquarters and have the products available in 100g tubes. But neither appear to be easy to source (not available from Amazon, etc...) as this stuff is primarily used in aerospace. So it's quite possible I'm digging myself into another rabbit hole. :doh:

https://www.youtube.com/watch?v=R6-ES3DMJg4

Calling the USA phone numbers on Monday...
 
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There is a 3M Silicone Paste that retails for under $25 a container....
http://www.amazon.com/3M-08946-Clear-Silicone-Paste/dp/B005RNEH5O/

Trust me, it's not the same as the MB stuff....

From the 3m Silicone Paste MSDS, it sure isn't:

Ingredient / C.A.S. No. / % by Wt
POLY(DIMETHYLSILOXANE) / 63148-62-9 / 60% - 100%
SYNTHETIC AMORPHOUS SILICA, FUMED, CRYSTALLINE FREE / 112945-52-5 / < 10%
DIMETHYL SILOXANE, REACTION PRODUCT WITH SILICA / 67762-90-7 / < 10%

The 3m product is just a blend of silica and Poly DimethylSiloxane (silicone). No mention of Lithium soap as contained in Merc's Silikonpaste.

 
Found a consistency chart to help lead me closer to a product match. As I don't have any of the actual Silikon Paste product, can anyone who does let me know if the consistency is rated at 1, 2 or 3? I am presuming a 1 would be like a white lithium grease in a tube. A snapshot of the actual color of the product would be helpful as well.

[TABLE="class: wikitable"][TR="bgcolor: #EFEFEF"][TD]NLGI number
[/TD][TD]ASTM worked (60 strokes)
penetration at 25 °C
tenths of a millimetre
[/TD][TD]Appearance
[/TD][TD]Consistency food analog
[/TD][/TR][TR][TD]000
[/TD][TD]445-475
[/TD][TD]fluid
[/TD][TD]cooking oil
[/TD][/TR][TR][TD]00
[/TD][TD]400-430
[/TD][TD]semi-fluid
[/TD][TD]apple sauce
[/TD][/TR][TR][TD][/TD][TD]355-385
[/TD][TD]very soft
[/TD][TD]brown mustard
[/TD][/TR][TR][TD]1
[/TD][TD]310-340
[/TD][TD]soft
[/TD][TD]tomato paste
[/TD][/TR][TR][TD]2
[/TD][TD]265-295
[/TD][TD]"normal" grease
[/TD][TD]peanut butter
[/TD][/TR][TR][TD]3
[/TD][TD]220-250
[/TD][TD]firm
[/TD][TD]vegetable shortening
[/TD][/TR][TR][TD]4
[/TD][TD]175-205
[/TD][TD]very firm
[/TD][TD]frozen yogurt
[/TD][/TR][TR][TD]5
[/TD][TD]130-160
[/TD][TD]hard
[/TD][TD]smooth pate
[/TD][/TR][TR][TD]6
[/TD][TD]85-115
[/TD][TD]very hard
[/TD][TD]cheddar cheese
[/TD][/TR][/TABLE]
 
Shout out to NOCFN for the help in Tx.

Called the Blue Sil distributor here in Florida and had to email the Calsil folks since they only have a North American office in the great white North (Canada). Both have the product available in Europe in 100g tubes for $50-$60. Let's see if that translates into only being able to get 18kg pails on this side of the pond...

If someone could snap a photo of what the Merc "Silikonpaste" product looks like, that would be helpful to identify if the replacement is actually similar.
 
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Guys: How about this NAPA product--Sil-Glyde. Part BK 7651351. I used it when installing new rear wheel carrier joints.

Regards,

Peter Weissman

Just a short note on Sil (Syl)-glide. AGS is the manufacture for Napa who also sells the product under the same name.

It's composition turns out to be Vegetable (Castor) Oil with a Diethyl phthalate thickening plastisizer and N-Phenyl-1-naphthylamine as an anti-oxidizer. Despite it's name inference, there is no silicone in it.

While its a great product, I would suspect castor oil wouldn't be that great of a substitute for Silikonpaste.
 
There are two MB "pastes" that have a special place in my heart.

The first is the now-infamous MB "Gleitpaste" - the 'sliding paste' for the sunroof mechanism. The large can in the photos below is "da Gleit..." part number 001-989-46-51.
Thank you. Ordered from local dealer. I think it was $78.

Last W124 sunroof internal parts got mangled, and roof remained closed for last couple years. Really want to avoid that happening again.

In this page from Kent's Mercedes Source, he recommends applying with both a curved tip syringe and an acid brush to spread grease out in the tracks.
https://mercedessource.com/store/su...genuine-mercedes-factory-track-and-pad-grease

Any thoughts on this?
 
Thank you. Ordered from local dealer. I think it was $78.

Last W124 sunroof internal parts got mangled, and roof remained closed for last couple years. Really want to avoid that happening again.

In this page from Kent's Mercedes Source, he recommends applying with both a curved tip syringe and an acid brush to spread grease out in the tracks.
https://mercedessource.com/store/su...genuine-mercedes-factory-track-and-pad-grease

Any thoughts on this?

Well, GSXR’s Uncle Kent uses and sells Meyle and Febi parts, billing them as top quality.

So you have to take what he says and does with a grain of salt.
 
Well, GSXR’s Uncle Kent uses and sells Meyle and Febi parts, billing them as top quality.

So you have to take what he says and does with a grain of salt.

That explains a lot. I had no idea they were related. :o

Dan
 
Nah, I got disowned for my anti-Febi, anti-Meyle leanings. I think Kent still gets along ok with his brother Gerry though.

:angel:

That's OK, as I got shunned by him and his followers after I pointed out an eBay seller in Germany who could provide Monark diesel injector nozzles for less than him, and quicker, too.

Dan
 
That's OK, as I got shunned by him and his followers after I pointed out an eBay seller in Germany who could provide Monark diesel injector nozzles for less than him, and quicker, too.
Well, yeah, when you expose his source to the world... I can understand him being cranky!

:5150:
 
Nah, I got disowned for my anti-Febi, anti-Meyle leanings. I think Kent still gets along ok with his brother Gerry though.

:angel:

Brother?!? Uncle Kent is over 70 years old — so 20+ years older than me.

Get those facts straight !! :jelmerian:
 
Brother?!? Uncle Kent is over 70 years old — so 20+ years older than me. Get those facts straight !!
Ah, so you were a late-in-life addition to the family. Learn somethin' new every day!

:bbq:
 
Well, yeah, when you expose his source to the world... I can understand him being cranky!

:5150:

I know who his source is in the States, but I've been sworn to secrecy. The guy I pointed out has been on German eBay for a long time and ships stuff over here almost daily. I bought a set of Monark nozzles from him for my former 350SDL and they were cheaper than Ken and I got them quicker.

Dan
 
I know who his source is in the States, but I've been sworn to secrecy. The guy I pointed out has been on German eBay for a long time and ships stuff over here almost daily. I bought a set of Monark nozzles from him for my former 350SDL and they were cheaper than Ken and I got them quicker.

Dan

Please be careful, as Uncle Kent is a member here (no joke). We don’t want to offend him. I know GSXR is protective of his uncle, as well. Blood is thicker than water. ;)
 
picture of the wonder paste content attached upon request

Super, thank you!

IMG_5817wunderpaste.jpg

That stuff kinda looks like make-up. Got me to thinking...

I wonder if could justify all this by telling the wife she might be able to use it for highlighting her fair complexion?
 
what is the method of choice when applying this paste? brush(what kind)? finger? q-tips?

From EPC I've attached the service bulletin for a pano roof. Not being familiar with the 500's sunroof, let me know if it's helpful. If not I'll try to dig something more appropriate out and post. Damn, now I have to go buy a 500e..

View attachment 74012

The special sliding roof sliding compound (001 989 50 51) being referred to is just Krytox GPL105 (PFPE). The Lubricant (001 989 14 51, now 001 989 46 51) shown at the bottom of page two is just the old number for Gleitpaste.
 
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Found a candidate that fit the elusive criteria. It's a Dow Corning product called Molykote 44m Medium Silicone High Temprature Bearing Grease.

The MSDS showed contents to be only Silicone oil and Lithium Soap: CHECK
The NLGI rating is #2: CHECK

Kinda got my hopes up only to be let down. But thanks to S500e's photo, at least I know for sure that Dow Molykote 44m is not the Wunderpaste.

Gloom, despair, and agony on me. Deep dark depression, excessive misery (if you know the rest of the lyrics of this song, your prolly getin' pret'near to needin' depends).

https://www.youtube.com/watch?v=ZAAKPJEq1Ew
 

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