QUOTE(JohnL77 @ Aug 31 2024, 01:33 AM)
I still have 1L Bold 15w50. I guess I should give it another try since the dirty carburetor might have affected the performance. But the 10w40 really only smooth until 1000km and then starts feeling rough. I tried that one long before the carburetor needed cleaning.
Sprinta F900 and Shell Power seems to be OOS in their respective Shopee Official Stores. Go petrol station buy I guess.
Ratings:
Yamalube - Shiiiiieeeet... Sometimes smooth sometimes rough. Only reason I'm willing to use this oil until 2500km is because of the Yamaha brand. Used this oil for like my bike's first 40,000km then I realized Grab gave discount for Shell EO.
Bold - First 100km gear change from 2nd to 3rd felt rough after that ok. Engine feel smooth up to 1,000km then it starts to feel rough. I don't dare use past 1,500km. Quickly change it when hit 1,500km.
Shell Long Ride - Really smooth all the way to 3,000km like the back of the bottle promises. But acceleration is lacking. When I pull the throttle the bike doesn't respond immediately. I can feel the engine spinning up but it's not translating to acceleration.
Shell Power - the first EO that convinced me EO can make acceleration better. It's been a while since I used this because it got expensive so I decided to try other brands like Petronas and Motul.
Sprinta F900 - Smooth up to 2,000km then it starts feeling less smooth. Acceleration better than Shell Long Ride I guess.
Motul H-Tech - Smooth all the way to 3,000km and acceleration better than Shell Long Ride.
Motul 7100 - Currently testing. Already more than 1,000km. Smoothness started to feel inconsistent after 1,000km but I feel the acceleration is the best out of all the EO I've used.
I see I see.. After reading I wanted to try Shell Power next, but then I realized it doesn't have w40 weight
I am using 10w40 oil for my kawasaki ninja 250. So far I used a few types of oils.
Sprinta F500 10w40 semi - smooth until I changed it at 2000km.
Kawasaki semi 10w40 - smooth until I changed it at 2000km. Top speed lesser, usually I can reach 165, with this oil 155 only..

I use this the most because I greedy bought a lot in 1 go.
Silkolene Pro 4 10w40 fully - smoother than sprinta and kawasaki semi. Changed at 2000km. Best so far.
Bold 10w40 fully - like u, gear change rough for I think first 60km? Very weird. Smooth until now but havent reach 2000km, but definitely over 1000km.
Actually I'm thinking of changing my oils to our local Malaysia brand Hipro.
I wanna try their best oil Hipro VeltorQ V9 5w40 ester + Pao oil for my civic type R
and their motoz M9 10w40 ester + Pao for my ninja.
Apparently their motor oil very well accepted in Bangladesh but not in Malaysia.