New API CK-4/FA-4 Diesel Engine Oil Spec

[StockEngine]

Question lang sirs, bakit po hindi pa sikat ang CK-4 oils dito sa Pinas?

Most are using CJ-4 or even CI-4 sa casas (Isuzu uses CI-4 sa Dmax, Toyota TGMO 5w40 is CF rated I think).

manufacturers stick with their recommended oils. which vehicle in the market requires ck? wala naman siguro