Recently I got changed transmission oil of GLI auto 2016 model from Toyota authorized dealership. They poured 3 liter ATF IV whereas owners manual says 5.6 liters fluid quantity for the auto transmission. The car has started vibrating in the 4th gear after the oil change. Checked from other dealership they say the oil level is okay, no need to pour more oil but are clueless about vibration from the transmission. Can anyone guide please.