[Stan21]

For my '05 blade with 32k miles
The aim is engine longevity no track racing.

These are my choices.
Will i get clutch slip or any other issues using any of these oils on my '05 blade 50k km / 32k miles on it.

Castrol Avecto 10W40
Motul 5100 10W40
Castrol Race 1 10W30
Castrol Race 1 10W40
Honda SL 10W30

Will 10W30 semi be too thin ?
Will 10W30 race castrol full synth be the better option ?
It seems that the honda 10W30SL is for 125cc bikes ?

Type of riding:street and some highway.
Climate -15 to 37c

I have the fan on manual switch so plan on keeping temps between 90 and 100 C most of the time.

I know castrol avecto has moby.
I know motul 5100 is SJ rated, it was mentioned to stray clear of SJ on the blade.

 

[bonjo]

you have quoted a very wide range of temperature. Do you really ride @ -15?!
I would choose 10w40 or even 50. If you do ride @ -15, then 5w40.
I would use full synthetic oil (although the terminology is abused by some manufacturers).
Personal choice: Mobil or Motul from your list and keep to JASO MA/ MA2 type of oil specially made for motorcycles

 

[954Kevin]

personally i use lucas semi synthetic 10w40. of those oils you listed i would use the motul. i would avoid full synthetic. if you can get honda HP4 10w40 thatd be fine too.