They are using this formula as a marketing trick to let everyone confirm about the originality of company products.
But among the local companies like Caltex, Shell, PSO, etc. The PSO engine oils are only better than "Guard's oil" especially for gasoline cars.
Whereas for truck drivers, PSO oils are ideal.
In the same budget, imported oils are available in the market. Especially PTT Performa & SIM oils. Price wise they are just same like local oils. But their quality wise performance is far better than Pak. domestic oils. This is what am regularly posting in my posts, but perhaps it will take years for Pak. people to know this fact. We just feel ourself attractive for oils based on advertisements or oil schemes.
My brother runs oil shop, and believe me. These days you can see the ZIC oils commercial on TV, and every 2nd guy coming to the shop is asking for the ZIC oil.
A month ago, Total advertisement was running on the TV, and every 2nd guy coming to shop was asking about Total's oil.
I find it really funny but this is lot of serious ignorance in our people.