Bought in November last year 40K driven at that time. 1st oil toyota Tin pack 5w30 very good oil it was. Change interval was 5000 km. Mostly driven in the city.
Then PSO 5w30 API SN CF. OCI 5000 kms again. Oil was in bad condition, slightly reduced when changed at 5000 kms. Mostly driven on long and hilly areas. I won't prefer using PSO again.
This time went for 5w40 shell. Wanted to observe any difference and to be on the safe side due to the hotter weather in the twin cities.