Sir, with due respect, but to me, problem seems something else. No doubt, it was solved after switching to 5w-30 from 0w-20.
In Pakistan, 0w-20 in BRV and Current generation Honda Civic has been recommended by none other than the OEM; Atlas Honda Limited itself and they must have definitely taken its approval from Honda Motors, Japan. Engine manufacturers do a lot of R&D before finalizing and recommending an oil grade. AHL is not short of 5w-30 that they are using 0w-20, and neither is the price difference huge (just 380 Rs. As per Honda Pakistan website; between 0w-20 and 5w-30). And there are also many happy owners of Honda Civic who are using 0w-20 since 03 years and never faced any issues. 0w-20 is definitely approved for use in BRV and current Generation Civic throughout Pakistan.
No disrespect; just sharing my thoughts.