First time there is an oil which has come in "Semi Synthetic in 20/50 Viscosity". Details as follows
Producer : Leppon, Korea
Brand : SIM3 Multistar
Viscosity : 20/50
Genere : SEMI SYNTHETIC
C. Interval : 5K km
Price : Rs. 525/L
Bottle : Blue Color
Normally all available oils in 20/50 are purely mineral oils and the CI (Change Interval) is 2.5~3K.
But this oil is the first one which came with "Semi Synthetic" Category and CI is 5K for sure.
Therefore, all those users who are using 20/50 simply Mineral oil, can now use above one also. Its just little expensive than normal mineral oil, but performance is good and change interval as well.