If that is Chevron Delo 400LE - i'm sure that stuff has added moly.

Could be the issue with the clutch !!

 

AND DEAN0

You'd be 100% correct......it does , looks like my lawn mower is getting
4 quarts of DELO and I have to go and get a filter and some more oil.

Glad I left it in the garage today and took the car....oh well ya win some
ya lose some..........think I'll get some Castrol 4T and call it a day

 

I'm sorry, but could you please explain what this is about?

 

This is an interesting topic, Dean0.
Delo 400 was always highly recommended as a wet-clutch safe oil (even some clutch manufacturers said so), but then a couple years ago I think Chevron changed the additive pack to include moly.
However, it's supposedly a low ppm, a different form of moly (smaller and dissolved), that doesn't actually hurt a wet cluch.
If you frequent any thumper forums, you'll find all kinds of threads on this topic. I think the general concensus has been that the low ppm and smaller molecule in dissolved form won't actually hurt a clutch at all, and that some moto specific oils actually contain more moly than Delo. People are still running lots of it, that's for sure.
Also, sprock just started running it this last oil change because of the slip, and actually reports less slippage.

Very interesting indeed.

I'm definately not an oil expert, though.. I just know that people are still running the stuff, and that there are several JASO certified oils that do in fact contain moly.

However, the DELO 400LE may be different? And contain more moly than others?

Joe, it's about molybdenum as a friction modifier. Moly is one of the primary additives that can cause a wet clutch to slip when added in high doses.

 

So what is Moly?

 

hmmmm I'm looking at thumper too and have found places with Blackstone reports
showing levels that are not over the top, apparently the package with this LE
upgrade has a specific form of moly that deals with corrosion.

Ya know to hell with it, my plates are nearly shot I'll stick with and see how it
goes might get alots worse might stay the same .......who knows ...who cares.

Anyhow Dean0 .........you will be happy to know ..... ordered some clutch springs
as well.

Oh and Dean0 this is the first time Delo 400 went into it...... so it's not the
issue to begin with ............be nice if it was just that simple.

 

Joe, it's about molybdenum as a friction modifier. Moly is one of the primary additives that can cause a wet clutch to slip when added in high doses.

 

Found this:


“ Moly” is the short name for the substance known as (it’s scientific name) Molybdenum disulfide. “Moly” (Molybdenum disulfide, and it's scientific call out: MoS2) is a naturally occurring mineral, formed and mined with other ores in various parts of the world. It is highlys refined and processed into sub-micron particle size at which time it can be used as a “solid lubricant.” It possesses the properties of being able to withstand extremely high load capacities (400,000 psi). It is chemically stable, has a very low coefficient of friction (0.05 to 0.09 in powder form) and has thermo-stability over 2,000°F. All of these properties are essential to reduce metal to metal contact and thereby reduce friction, heat, and wear.

 

Moly is short for molybdenum

 

So I'm guessing we have wet clutches? But since you can just lean it over and not even remove the engine oil to change the clutch, it doesn't appear to be totally immersed in oil, so it just dips in it a little?

And this means that our engine oil and our transmission oil and clutch oil are all combined in single system/sump/whatever?

Sorry, but I've yet to work on the guts of a 4 Stroke bike engine.