Don't talk about owner's manual. The quality of oil which suzuki is giving everybody knows and it's in front of you all.
Mobil 1 is an old oil in Pakistan. Mobil was introduced in 1997 in Pakistan. It came in use after 2001 or 2002. People were unaware about synthetic oils, those times. Mobil was the one & only brand who introduced synthetic the very first time in Pakistan. Mobil is giving you the same best quality as was giving in past years. We can't change person psychic regarding brands. Engine oil plays the most important part for your vehicle. If you put the right lubricant in your vehicle it will definitely give you the best performance along with outstanding driving pleasure. Just keep in your mind the change interval. In winters the oil viscosity & burning factor is very less than summers. If you are change your oil at 8-10000/km-hr, in summer the drain interval would be 5-6000/km-hr. I am talking about MOBIL 1.
In addition visit MOBIL 1 official website of USA, just look go to the official distributor's of MOBIL 1 USA, you will find MAL Pakistan the one & only offcial distributor & partner of MOBIL 1. I can't change people minds, i have personally experienced lot of lubricants local & imported, but i found MOBIL 1 the best among all the other brands.