Molyslip

[byron]

<font color=blue>Having followed the threads on Oil quality and Glazing I would value opinions on using Molyslip. I have used it now for 4 seasons on two different boats and been very happy with the results.
What do others more knowledgeable have to opine.
</font color=blue>

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[ccscott49]

Molybdenum sulphide powder (very finely ground) in an oilbase. It fills the microscopic pores in the bearing surfaces, giving a very uniform bearing area, but still alowing an oil film to form, Metal should never touch metal in a bearing, So reducing friction. Very good stuff it is aswell. I used to build all my engines, using molyslip as the assembly lubrication. Not reccomended by rolls royce for use on their engines, as I was reminded at the rolls royce engine school, oops! But I swear by the stuff. I've also never had a premature engine failure, even on racing engines using this technique of assembly. The wear on racing engines I have stripped, was more uniform and less than engines not treated this way. I'm sure there will be other statements about it clogging things up etc. but IMHO good stuff!

 

[charles_reed]

The only reason RR used to frown on it was the possibility of it blocking filters - in extreme (low-temperature) conditions the particles have been known to agglomerate.

It takes me back to the 60s when we used to use it re-building tuned engines to prevent piston seizure when running in.

Didn't know you could still get it.

 

[DepSol]

Totally agree with you both on the molyslip but havent used it in years. My Dad always used to use it.

On the subject of Bore Glazing, it seems that in Diesel engines that it is due to the engine running at the wrong temperature or for short periods of time at low revs. Cant evidence this but testing so far seems to give this as an explanation.

Hoping to have test results soon on how Soltron can reduce Bore Glazing, until then I wont say any more about it.

Dom

Merry xmas and a happy new year

 

[ccscott49]

Yes, it's still available, having a bit of a rennaisance actually. We use it quite a lot in the oilfield, but I can't smuggle any ashore!! Bugger!

 

[ccscott49]

Anything which improves combustion, can help bore glazing, but the main cause of bore glazing, is incorrect running in procedures, and running at the wrong (too low) temperature, at low revs for extended periods.

 

[DepSol]

Yes exactly, hence the short running periods at low revs.

Happens a lot over here.

Dom

Merry xmas and a happy new year

 

[andy_wilson]

\"how Soltron can reduce Bore Glazing\"

Good to know you have the title of the report sorted before you have received the results.

 

[DepSol]

Re: \"how Soltron can reduce Bore Glazing\"

Of course got to do things in the right order.




Dom

Merry xmas and a happy new year

 

[ccscott49]

Re: \"how Soltron can reduce Bore Glazing\"

After all, "Poetic licence" and all that!! tee hee

 

[brianhumber]

My dad who was RR aero engine trained on Merlins etc used to use it when bedding in new components, but only very very sparingly.
I was trained by one of the seven sisters as they used to be known and we never used it, but later we did used to smear, again very sparingly almost an invisable trace on new tight tolerance items, copperslip. I never had filter blockage problems or initial hot bearings on the equipment I o/hd.

Re the other threads on bore glazing etc, as with most things a germ of thruth in most posts, if you run any machinary in so as to bed the bearing surfaces/rings/cylinders correctly then periods of light loads, low revs, varying temps etc will not do much damage.

A calm and peaceful season to everybody anywhere, tolerance and moderation to all

Brian

 

[Avocet]

Hang on a minute!

Something's puzzling me here. If Molyslip fills all the tiny imperfections to give a more uniform bearing area, isn't that the same as "glazing" a bore? I mean, people seem to go to great lengths to roughen the surface of a cylinder wall so it retains a bit of oil and the "scraper" piston ring can live up to its name and then we go and make the bore all nice and slippy? Have you ever had any experience of high oil consumption with "Molyslipped" engines? If not, maybe bore glazing is a myth after all?

 

[ccscott49]

Bore glazing is not a uniform area, its varnish from the combustion of the oil, coating the bores and rings. Never had a problem with molyslipped engines. Ever. Don' get bore polishing, mixed up with bore glazing, too different things entirely. Bore polishing is OK for the engine.

 

[byron]

<font color=blue>When I purchased the Molyslip direct from them they queried why I wanted so much. I explained I was buying for friends too. They said 'OK' but then made great emphasis that it was not to be used until an engine was well run in, otherwise, they said, an engine will never run in.</font color=blue>

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[Anchorite]

Re: Equal parts with Soltron??

Assuming one can find it how is it used? Is it added to engine oil? What
hitherto unsuspected ailment is it supposed to alleviate?

 

[byron]

Re: Equal parts with Soltron??

<font color=blue>You just add the required dosage to your engine oil, it coats everything that the engine oil touches. On my last boat I got a 16% fuel improvement and another knot. Unfortunately onmy present boat I put it in before seeing what she was doing without adding it.
Stories abound about the stuff, how a car travelled 600 miles having lost all its oil without the engine seizing etc. How many of these tales are urban myths I don't know, all I do know it works for me. </font color=blue>

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[philip_stevens]

Re: Equal parts with Soltron??

I believe it happened in Australia, when, under Australian Automobile Association scrutiny, a car engine was filled, run, and then emptied of oil. The car then ran from Perth to Adelaide. I think I read the story in an Aussie magazine many years ago.

Perhaps one of the Aussie "posters" can confirm or deny what I read as true or false.


regards,
Philip

 

[LadyInBed]

Re: Similar Products

I've seen other oil additives such as Wynns & STP, do they do the same job as Molyslip or are they something totally different?

I seem to remember it being said some years back 'that an engine will run on a can of Wynns and Coca-Cola' as a lubricant or something like that.

 

[Col]

Re: Similar Products

Wynns & STP are mainly an oil thickener. I wouldn't give them house room.Molyslip is a different kettle of fish.


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[Strathglass]

I have certainly used it in the past. It reduced the noise level coming from a faulty diff. and seemed to make some difference to the performance, but it is difficult to quantify how much. (over 40 years ago)
The one negative thing I have heard about it was when it was used in a car with a centrifugal oil filter, where it totally blocked the filter with sudden catastrophic results at high speed. 'The car was an old simca I think.

Iain