dear faisal bhai
congrats for having new mehran mashallah , mehro always seems good in white color
rims are very attractive.
pls dont use surf for washing car even u dont have availability of car shampoos, u can buy car shampoo when ever u have chace to visit any big city or ask ur any friend or relative to send u by courier , in the mean time pls dont use surf to wash car, surf is quite abrasive and cause swirls , dry the paint and ultimately u will lost the shine from paint.
pls also dont use hair shampoo like head and shoulders as this also dry the paint by sucking necessary paint oils , in most worst case u can use sunsilk egg shampoo ( i said in most worst case though its not recommended ) and after shampoo wash must apply a layer of wax
most economical car shampoo like formulla 1 far far better than surf or hair shampoos