I of 3 which oil best for gen 2

[DR.MUSIC]

Hi All...I need to put new oil in my gen2 2012 that has a slight clutch slip problem. I'm using the yamalube fully synthetic just now and when i whack it open it the rpm climbs and then settles down and then accelerates....slight slippage....please suggest which of these 3 will cure the problem.
Thank you...

 

[MileHayabusa]

How many miles on it and have you done any mods like a flash, etc.? Might be time to look into the 'Double-D Mod' and why would you not try a semi-synthetic or conventional oil to see if that cures it.

I know some people have claimed to have issues with the Motul but that was their 300V line.

 

[John Henderson]

Everyone has different opinions but from my research I went with oil that tends to be good on engines running hot like air cooled (yes I know it is water cooled). Just like knowing it is more resistant to oil high temperatures cause VMAX runs hot in my opinion but I am a new rider… So take that into consideration.
https://a.co/d/gxwkrCu

I also put some Prolong in as an additive with no clutch slipping … Probably not recommended but I started using it back when it came out and my 2010 Toyota Sienna looked like a new engine after 10 years (80k miles) when they took a look in for service inspection included with purchase… Asked what I was putting in other than regular oil changes included in package (just Prolong and seafoam (every now and then))… So I kinda put Prolong in all my vehicles for oil changes…
https://a.co/d/ihCnlds

I have a feeling I may get roasted for this post but

 

[crynool]

A friend of mine (owns 5 Gen2, couple of Gen1 etc) recommends: Castrol GTX 10W40. I use it, never had clutch slipping (Nashflash, DD Mod).

 

[DR.MUSIC]

How many miles on it and have you done any mods like a flash, etc.? Might be time to look into the 'Double-D Mod' and why would you not try a semi-synthetic or conventional oil to see if that cures it.

I know some people have claimed to have issues with the Motul but that was their 300V line.

Nash flash and 43000km.
Regular oil and filters changed.
Now going to use amsoil and liquimoly.