Hi guys hope the oil gurus can enlighten me. Reason I asked is because I want to use this Shell Helix Hx7 semi synth oil in my Strada (2011 model) but kinda getting confused with these ratings.

The requirement of the strada is API CD and ACEA B2 if Im not mistaken.

Shell helix API is CF but is ACEA B3 B4. The way I see it the oil has sub-par rating in API terms but in ACEA it gets a good rank? How can this be and what should I follow, API or ACEA?

Another thing, CF oil is said to be obsolete being replaced by CH CI and CJ oils. Sabi nila its also intended for INDIRECT inject diesels. Pero if we will base it in ACEA where the oil is rated B3 and B4, it is specifically intended for DIRECT INJECT diesels?

Medyo confusing....

Im really after shell oils kasi its readily available over the counter but if the rating is not good, I will search for the harder to find oils........