Al4 gearbox

merheba my car 2013 model 2008 vti 1.6 my car i wanted to ask because i did not know. When the car is cold, the gear shifts from what it should be, with the message it shifts before reaching 2 thousand revolutions, or rather, it ranks all the gears one after the other. But when the movement indicator reaches 90, everything returns to normal and the car flows like oil. I wonder if this is a problem or is it normal? I would appreciate it if anyone knows about it. Also, I want to change the gearbox oil of my vehicle and is there a master who knows Sakarya work? & Nbsp;