OK. I get it.
Bro, I would recommend to get rid of this oil grade ASAP, switch to 5w-30, API SN, Fully Synthetic Engine Oil from any well reputed Brand (like Total Quartz 9000 Series; its best value for money) and stick with this grade. Also ensure that the oil you are buying is 100% genuine and original. If possible, go for an engine flush before switching to this new oil grade.
After switching to this oil grade, change engine oil along with genuine OEM recommended oil filter after every 5,000 Kms (The drain interval is ~5,000 Kms)
20w-50 oil grade bzaat e khudd bura nai hai, but aap k engine k liay nai hai. Aap switch kar k daikhein, then share your experience here. Aap ko pick, power, fuel efficiency, mileage, etc. mein wazeh farq nazar aye ga. I.A.