Not going for amsoil. It's too overrated in my opinion. In Pakistan they claim 20k kms with one filter change, but the cars who are actually doing that mileage in Pakistan are reducing oil. I got good experience with Mobil 1 and I don't know why people here said that my fuel economy will improve on 5w30, but in actual its the same as it was on 5w50Mobil 1.