i have city 2003 exi-s automatic petrol. i bought it from clifton karachi 2 months back. it was 80k km driven. i changed oil, oil filter, atf and brake oil. car has rust all over inside bonnet. near engine, on bolts and when i asked a mechanic he advised me to 'buff' some parts, plugs and chrome some parts to avoid rust. he also advised to change the timing belt and chamber resonator( black rubber type pipe which gives suction) and spark plugs. please advise me in this regard. waiting for your precious comments.
thanks,
thebo.