Because if 5w-20 is ruining engine’s life here in PK because of high temperatures, then almost 25% cars on all PK who are using ZIC A+ (5w-20) since last many years, would have piled up in junk yards.
Here every 3rd or 4th Car is using ZIC A+ 5w-30 and this oil is strongly dominating among all the others oils. I saw people using 5w-20 (zic a+) in Bolan, Mehran, Alto, even in Cd70, Cg125, and many other vehicles where this specs oil is not recommended at all. But still if ZIC is surviving in PK, is because of their most popular and dominating oil ZIC A+ 5w-20.
I am using it in my 25 years old car. Toyota Crown with 3000cc Engine clocked 355K till now. And I shift it to ZIC A+ 5w-20.
Plz don’t tell me this is not suitable for my vehicle in summer due to high temperatures, etc. etc.