Salam,
For everyones info I have already checked owners manual and which grade of oils I can use.
I have a civic Vti prosmatec 1.6 with only 42,000Km. Last oil change I did I used Honda genuine 10W30 Semi-synthtic with no issues.
But my 2 mechanics tell me that I should be using 5W-30 specifically for this car.
So, I want to know whether I should follow advice of mechanics and use 5w-30 or continue using 10W-30 as both can be used as per the manual.