I've suzuki cultus 2014. Bought it like a month ago, changed the oil( shell 10-40) and then drove from karachi to Lahore. Changed the filter and tuning everything. But now from last 2-3 weeks when ever i start my car after the rest of 4-5 hours, white smoke comes out of silencer for 15-30 secs. Pls advice a solution for it.