sezan

yes that’s the bike one. but the one i put its said 2% of the engine oil capacity can be put into wet clutch and yet this clunk issue happened

it said 2% can be added in a wet clutch. i did that accordingly. or maybe you’re right. this product is just not suitable for bikes

i also knew the same but i don’t know why this happened. please see the photo and let me know if this what you’re talking about

the mechanic at the yamaha service centre did it all and still couldn’t figure out what’s the actual thing that was causing this

thanks a lot mate. i was looking for the exact reason why. i believe finally got it figured out. On monday i’ll take it to the service centre and change the clutch discs.

do i only need to change the clutch discs or also the pressure plate? is there any tips to detect the oil additives being absorbed into the clutch discs visibly? thanks

do i only need to change the clutch discs or also the pressure plate? is there any tips to detect the oil additives being absorbed into the clutch discs visibly? thanks

my bike is yamaha r15 V4 wet/slipper clutch assist. my problem started when i put liqui moly Mos2 oil additive with the motul 5100 10w-40. riding the bike after oil change i heard instant loud clunk in every gear shift. before there were no clunks and gear shifts were buttery smooth. then within 100kms of riding i drained the engine oil and put liqui moly 10w-40 semi synthetic and still hearing the loud clunk and so far none of the yamaha dealerships found the problem . Once the bike get into working temperatures (~ 100 C ) I hear a noticeable clunk while shifting gears. This will not happened if the bike is still cold. The sound is mostly notice in this shifts order : Up shifting : N>>1 - most of the time I hear the sound 1>>2 - 90% of the time 2>>3 - Always 4 & above no sound whatsoever - All good. Down shifting: 4>>3 - most of the time I hear the sound 3>>2 - 90% of the time please help what’s wrong