Moly levels in MOtorcycle Oils

[tc1446]

Some say too much moly makes the wet clutch slip, etc, etc.

Looking at the various UAO's of motorcycle oils over the past year I see levels from almost none in some Castrols, with the majority of brands in the 40-80 ppm range. This range also includes the diesel oils commonly used. Then theres Motul 300 in the 150-175 range and Redline well over 350 ppm.

What is one to make of this wide variation in Moly? Or does it make any difference at all
to bikes with wet clutches?

 

[montero1]

Factory fill in my Goldwing had 385 ppm....4k miles.

 

[Kamele0N]

For instance....when you are looking on a bottle of LM...it is adviced there not to add more than 2% to motocycles with wet clutches...

Othervise mixture of 5% to engine oil is what is optimum...

 

[Kamele0N]

but I dont know how many "ppm-s" of moly has that 2% or 5% mixture...

 

[pb]

good point. here's what i've found in my UOAs.
kawi 10w40 organic w/ 1.4k miles 0 moly
amsoil MCV 20w50 w/ 1.7k miles 36 moly

 

[BusyLittleShop]

Additives are only a small percent of the total oil product and help
the base oil do things that it otherwise could not...

Additives fall into several basic categories but Moly is the most
often used friction modifier because it has such a high melting
temperature (4730¯ F versus 2795¯ F for iron), it works great as a
high-temperature, high-pressure antiwear agent. Some claim that
because moly is so slick, it can cause clutch slippage... but note
that 6 of the 19 motorcycle oils Sport Rider tested used moly
including the HP4 market by Honda for any of their motorcycles...

in short Moly will not defeat a wet clutch in good working order... fact is all wet
clutches will reach a point in their life and start to loose grip no matter what oil you use...




http://image.sportrider.com/f/8958423+w750+st0/146-0310-Moly.content-zoom.gif

 

[Shannow]

Originally Posted By: BusyLittleShop
Moly is the most
often used friction modifier because it has such a high melting
temperature (4730¯ F versus 2795¯ F for iron),


Where on Earth did you "learn" that ?

The moly friction modifiers in engine oil are liquids, so WT F does the melting point of elemental molybdenum have with it being an often used friction modifier ?

And while at it, where did you get the 'most used" from as well...that's another just plain wrong.

 

[alarmguy]

One quick comment, I never cared to look into it any further but feel free to do.
I read someplace that the some manufacturers developed a way to make the "old" moly 4 times more effective, thereby reducing the amount needed.

 

[BusyLittleShop]

Originally Posted By: Shannow


The moly friction modifiers in engine oil are liquids, so WT F does the melting point of elemental molybdenum have with it being an often used friction modifier ?



I just like saying moly's melting point...

 

[kschachn]

Originally Posted By: BusyLittleShop
Originally Posted By: Shannow
The moly friction modifiers in engine oil are liquids, so WT F does the melting point of elemental molybdenum have with it being an often used friction modifier ?

I just like saying moly's melting point...


Sure.

 

[Clevy]

Originally Posted By: Shannow
Originally Posted By: BusyLittleShop
Moly is the most
often used friction modifier because it has such a high melting
temperature (4730¯ F versus 2795¯ F for iron),


Where on Earth did you "learn" that ?

The moly friction modifiers in engine oil are liquids, so WT F does the melting point of elemental molybdenum have with it being an often used friction modifier ?

And while at it, where did you get the 'most used" from as well...that's another just plain wrong.



The problem with larrys facts is that they simply aren't true.
He might be able to sucker the people who come into his shop that he has a clue however here we all call hi, on his nonsense.
Sadly the guy hasn't got even the slightest clue about oil. He comes here,spouts nonsense then leaves thinking he knows something. When the truth is we wouldn't take his advice if it was free.
Oh yeah.
It is

 

[Pontual]

Wow, democracy, is, short tripped, today.

 

[Pontual]

Originally Posted By: Shannow
Originally Posted By: BusyLittleShop
Moly is the most
often used friction modifier because it has such a high melting
temperature (4730¯ F versus 2795¯ F for iron),


Where on Earth did you "learn" that ?

The moly friction modifiers in engine oil are liquids, so WT F does the melting point of elemental molybdenum have with it being an often used friction modifier ?

And while at it, where did you get the 'most used" from as well...that's another just plain wrong.



Liquid up until forming ash, or would it burn w/o forming ash?

I think new formulations aren't using high levels of MolyDTC anymore because it forms deposits on ringland. I don't remmeber who brought that ? Do you read it?

Liquid ...

 

[kschachn]

Originally Posted By: Pontual
Wow, democracy, is, short tripped, today.


Apparently the excessive use of commas is not.

 

[FastGame]

Originally Posted By: kschachn
Originally Posted By: Pontual
Wow, democracy, is, short tripped, today.


Apparently the excessive use of commas is not.


Maybe, he, types, like, he talks, and, doesn't sound, monotone, like, you do ?

 

[Robenstein]

Originally Posted By: FastGame
Originally Posted By: kschachn
Originally Posted By: Pontual
Wow, democracy, is, short tripped, today.


Apparently the excessive use of commas is not.


Maybe, he, types, like, he talks, and, doesn't sound, monotone, like, you do ?

He must talk like Christopher Walken. Ha

 

[285south]

That chart is mute since it does not have RedLine in it.

 

[SR5]

I just mentioned this in another thread (MC gear shift), but I ran my Honda CBR 600 on Castrol Edge 10W-60 for 15 years straight without any clutch problems.

According to this VOA, it has about 200 ppm Moly in it.

http://www.bobistheoilguy.com/forums/ubbthreads.php?ubb=showflat&Number=2988455

I think it's a great oil to use in a MC.

 

[Mackelroy]

How many miles in that 15 years, 15,000 ?


You got away with an mb rated oil in a wet clutch congradulations, the MA frictional grade oil would have been , less risky.

 

[SR5]

Originally Posted By: Mackelroy
How many miles in that 15 years, 15,000 ?


You got away with an mb rated oil in a wet clutch congradulations, the MA frictional grade oil would have been , less risky.


15 years 100,000KM all on a regular diet of Castrol Edge 10W60.
No engine problems, no clutch problems