About oil grades let’s go a bit technical...
Grade of oil is not just about long distance ride or heat handling. It’s also about the mass of the components and clearance between the components. 50grade cannot flow as good as 30 grade oil in tight spaces due to higher oil film thickness which leads to oil burning and deposits especially at high engine speeds. And also lower viscosity leads to better heat dissipation than the higher one. The cooling system is designed enough to manage the temperature with 30grade oil.
Higher viscosity of the oil helps maintain better film thickness at high temperatures but increases viscous resistance between components which leads to reduced acceleration and smoothness. Even most of the newer generation car engines are now using 30grade oils.
In my experience i used to ride my bike for around 300kms every weekend on highways for the past year. I used to ride above 100kmph all the time and I never found any heating issue with 5w30. In 40 grade I felt a mild difference in reduced acceleration and top speed. Wait till 2500 kms to get your engine completely settled.
Happy riding...




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