I know most of this is discussed here, as title suggests i feel i am also one of the victim who is witnessing a reduction in oil level albeit slowly. As shown in the dipstick image here after a drive of 5000km post oil change i see a reduction in the dip stick level, marked in red. (Checked in flat surface in cold engine - 10 hours of inactivity). When the fill was done in feb 2015 (i inspected the new oil and confirmed the marking) the oil was new and covered till the cross hatch, now looks like some 100-200 ml is reduced. Observations/Drive pattern: Mileage (odo reading: 31,150 Km using it since Feb 2012 single owner). 1. More of a city driven car. 2. Maintain 1-2 min idle rule during start /stop of engine. 3. Carried out all services/oil changes on time but only yearly once as per FASS. 4. Seeing no black smoke when revved to 4k rpm on a well warmed up ending. 5. No visual leaks any where. Note: During Feb 2015 service also i saw a reduction in dip stick to same extent and had replaced the oil after 11000KM. Where could the oil be getting lost, i judiciously check it once in 3 days now after this observation was spotted last week. What preventive action should i take ?