its vti auto 04
been driving it in city n on motorway
but its the first time that it will be going on mountain side i.e to the monal (pir sohawa) islamabad.
so can any1 give some tips on how to drive it there,it should be in D, D2 or D3?
n can it be changed from D to D3 or D2 without pressing brake?
EDIT
last night had the experience 
was driven by my dad as i wasnt going.
D was used while going up,then on inclines D3 n on steep roads D2 was used as it wasnt going otherwise
n on the way back,only D was used
