[color=#006600][/color]dear auto gigs in the house,please inform me on ...what causes a vehicle to smoke.I have heard so much from a lot of people such as 1.oil drain/change when engine is hot .2.swapping lubricants even if they are high grades.3.broken engine rings... what makes rings to break?
and I guess these applies to all motorised engines?

you did not service the car as at when due,,,or you may have used wrong spec,,,you may have bought bad fuel (mix up with water)

(1) service ur car timely and with the specified oil. to be sure of timely servicing you can calculate the mileage from ur last oil change by noting down the reading on ur odometer or u can also program the trip A/B and monitor it.

(2) do not let it out level cross the full mark on the gauge (over gauge)

(3) mind the distance u do with ur car based on the engine capacity. E.g a 1.3 liter traveling long distances frequently on air conditioner may not last up to a v6 3.0 engine doing same (all cars are not the same though).

(4) always allow ur engine to run for about 5mins (warming) when u start on a new day.

(5) thank me later