Sir I have a Strada 2008 2.5 A/T. It has K&N Air filter, had its fuel injectors recently replaced, Common rail injectors replaced by casa? recently changed oil from Royal Purple Fully Synthetic to Mobil Delvac MX Mineral.

Currently it is emitting white smoke... is it possible that this is because I switched from FS to Mineral oil? I don't think so. Problem is probably on the injectors or injector installation.