well u will be having free voucher for 5 thousand and must utilizEd the 1000 free voucher, u need to go for oil change for sure, normally zic is 5000, so dekh lein, rest u can discuss with them if u have any query,
haan AC check kar lein agar AC ki waga se u feel an differnce in drive so u can sort it out, adjustment free mein karwa lena for this time
regards
Ahmad