Whenever oil starts deteriorating:
- Engine Noise increases
- Engine gets to its optimum heat quicker
- Engine generates more heat in a long drive (like my daily distance is like 40kms)
- Clutch performance reduces (notable because of that 'gap' increases in the clutch I.e. clutch liver loosens)
I am saying it as 'Very Good' because in comparison to other oils, that's a surprising difference. Its not much, but it's noticeable.
I am dragging this oil further, just to see how long it lasts.
I have never judged any oil with its color in my life.
Oil is supposed to go dark colored. If it doesn't, then there is something wrong with the oil. There Is a reason why it becomes dark coloured.
AHL/Honda recommends 20W-40. That oil is 10W-40 I.e. even better. It'll take less time for engine to reach optimum heat under this oil.
I am planning to get this next time.
You are right. I remember vividly that it made my bike's engine produce more heat than usual, as compared to other oils and it was very noticeable.
Plus, being 20W-50, it really takes much more time for engine to reach its optimum heat level. More time than the other oils i have used of the same grade.