Friends I have a problem with my z20let.
I have a small noise coming from 1500 rpm to use 0w40 mobil1.Yo I do not have the manual for the car which does not use that oil.
Been reading and I see that many usais the 5w40.
I've seen and been investigating the Castrol Edge 10w60 Motul 300V 15w50 and you seem?
I recommend that oil? The weather here is hotter than in the UK for example.