MY_VRSCDX said:
WTF?
Hey wait a minute! what is this then?
The oil analysis from members on
1130cc.com clearly shows Moly in the Amsoil oil for motorcycles!
There can be no
moly at all to be a
JASO MA, so Amsoil is a
JASO MB too!?!?
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View attachment 103148
Redline contains some moly, but it is MoDTC which won't make a clutch slip (not MoS2 which will). RedLine also has its own proprietary synthetic friction modifiers, and these will not make a clutch slip either. JASO does not have any category to classify these friction modifiers, but seeing it is friction modified, they have to call it JASO MB anyway. There may very well be a JASO MC category in the future, to account for these friction modifiers which will not cause clutch slippage.
the JASO MA certification does not allow any moly of any kind, not to mention new atypical types of friction modifiers that didn't even exist years ago when the category was created.
OK, then how do you know that the moly in the Amsoil report is not MoS2? One cannot know such a detail from the basic testing done? Redline typically shows 600+ ppm of moly and you are worried about the 50-60ppm in the Amsoil. Please? Not to mention the 80+ ppm in Mobil 1 V-Twin, 50+ in Mobil1 4T, 10-20ppm in Golden Spectro, even Honda shows 50+ in their own GN-4. Moly is a generalized term and does not directly applied to whether an oil meets MA or MB requirements.
I know you have been trying to stir the pot lately, which is accentuated by reviving multiple old threads, but please try to understand somethings before doing so. JASO MA or MB ratings are frictional ratings for wet clutch applications and do not limit specific additives. There are MANY different types of Molybdenum available for motor oil blend and a simple oil analysis report is not specific enough to differentiate between the small differences and picks them all up as moly.
Here is some informational details on the JASO testing for you.
Evaluation Item Test Procedure JASO T 904 Standard Index MA - MB
* DFI (Dynamic Friction Characteristic Index-DFI) MA is 1.45 or greater / MB is Less than 1.45
* SFI (Static Friction Characteristic Index-SFI) MA is 1.15 or greater / MB is Less than 1.15
* STI (Stop Time Index-STI) MA is 1.55 or greater / MB is Less than 1.55
Note: An oil that does not meet all MA limits is classified as MB.
If you are interested in the Physicochemical properties that JASO MA/MB oils must meet I can provide those as well.
Also, Please watch the language. This is an educational thread.