Originally Posted by sunruh
Originally Posted by Spktyr
Premium Blue does not meet JASO MA/MB and therefore may not be wet clutch safe.
this is about the worst information possible
there is NOTHING. i repeat
NOTHING about a non-jaso oil that that creates it to be non-wet clutch safe
as a matter of fact, most of the manuals only call out - do not use Energy Conserving II - which i have never seen labled on a bottle...ever.
ive seen EC, but never EC II.
for more than a decade shell rotella t 15w40 was not labled jaso and yet it never harmed one clutch
same for mobil1 15w40 redcap
or
ANY OIL before the jaso standard was created!!! ohhhhh how about that for REAL info.
You missed the "may" part in my statement and then went all Scotty Kilmer ballistic. I suggest you do what Kilmer does and crawl under a vehicle that's supported only on a hydraulic jack, then rant loudly and shake the car as he does.
Regarding Energy Conserving II - it was replaced with SJ. See:
https://www.bobistheoilguy.com/forums/ubbthreads.php?ubb=showflat&Number=72549
https://www.bobistheoilguy.com/forums/ubbthreads.php/topics/110710/Re:_Energy_Conserving_II
Just how old are the bikes you're looking at that you're seeing "Energy Conserving II" in manuals? My daily driver bike was made in 02 and in the manual it does specifically call out JASO-MA and against the use of Energy Conserving, just like most bikes made in the last nearly two decades:
For the rest of us, the MA/MB cert means that a post API-SG oil is inherently wet-clutch safe and you need look no further, use with confidence in your motorcycle without worrying about it killing the wet clutch. Other non-MA/MB oils may be okay, as Rotella T was, but they may not be. If you wish to use an oil that does not state that it meets MA/MB, you can either use it and hope it doesn't kill your clutch (but be ready to replace it if the oil does), you can contact the manufacturer and ask, or you can do extensive internet research and find out what people's experience with it is (in order of effort required.) Point is, without JASO-MA/MB on the bottle, you don't inherently know. "Do ya feel lucky, punk? Eh? Do ya?"
By the way? Mobil 1 15W50 redcap SH wiped out a relatively new clutch on a CB750 I had. The break point was SG - the last API designation that was specifically wet clutch compatible. That was an expensive discovery.