Aslamu Alaikum Friends.. Recently I Bought Chevrolet Exclusive 2005 Model , it was swap with Daihatsu Mira Engine KF-ve 660cc Automatic , i just change oil 20w-50 Havoline , previously there is no blue smoke i travel from lahore to multan , but after oil change it giving blue smoke when i High rev it. 2nd question which sparkplugs good for it?