i could make you understand that since its PAKSUZUKI and users are mostly ILLITERATE
they used EASIEST MEAN to write it DIRECTLY for people to make it easy how to read it...
Just POUR THIS>..NO Questions asked...
take it this way
Yes 0w-20 covers all temps but it also says you can also use 5w-30 and 10w-30 if you dont wanna spend on 0w-20 or wont find it... pather pe lakker nai ha bhai.... this is what confuse 95% people as they follow a single recommendation like anything w.o looking at actual facts(atleast for those who dont wanna go in details...good for them)
its owners choice what they wanna use.....so dont make it look like 0w-20 is only gonna work and on other grades...its just gonna fail...no it wont...as long as you follow owners manual.
its simple as that as many people dont wanna go in this details