That is why when my friends go for 0W-40 I always tell them no need for Malaysian weather....
---------- Post added at 04:59 PM ---------- 6 hour anti-bump limit - Previous post was at 04:52 PM ----------
Nah! not that heavy until mechanism can be damaged leh!
I have tested oil from 30 to 60 weight, 5w-30. 5w-40. 5w-50 and 10w-60. My engine still running after more than 10 years. Since my engine runs on hydraulic lifters for tappets, 30 weight is too light, the tappets becomes very noisy. 40 weight seems an ideal viscosity. 50 still ok, but 60 is heavy