of kos SN is better,
that differentiates the price, eg: Tesco Castrol magnatec RM90 cos its API SL,
if direct from Castrol price will be Rm110+ cos its API SN.
but as CVKIT said no diff in a myvi.
SN is the newer grade for engine oils because it meets a certain criteria. The higher the grade the more stringent the criteria.
So if you compare SL and SN, SN is higher in terms of criteria.
If you're talking about your Myvi which isn't a high precision super machine, it doesn't make a difference which one you choose. Choose the one that makes you happy.
But SN newer test could only be environmental only, not performance.SN is the newer grade for engine oils because it meets a certain criteria. The higher the grade the more stringent the criteria.
So if you compare SL and SN, SN is higher in terms of criteria.
If you're talking about your Myvi which isn't a high precision super machine, it doesn't make a difference which one you choose. Choose the one that makes you happy.