Buy Full synthetic, not the blend that might not be true
I Investigated 10 Motor Oil Brands in the US (Only 2 Are Actually Protecting Your Engine)
The Japanese Oil Change Trick That Keeps Engines Running Past 600,000 Miles
Collection of car / automobile related information available on YouTube video. Use it as a general guideline. Please check your manufacture's specific manual for your own car ! Take care ! Good luck ! All the best !