Winter Upon us now and the Cooler Temps setting in. The Wife had noticed the Fuel Mileage was down on the Compass, I do know I loose about 75 km's on average to a Tank during the colder part of Winter. I changed the Spark Plugs ( Originals ) speedo just turned 80,000... Changed the Air Filter. Now my question how often should the Fuel Filter be changed ?? Can't remember if in fact the Fuel Filter was automatically changed when Compass was in for it's scheduled Warranty checkup....... One finally query ?? Doesn't the Oil Companies use a Winter Blended Fuel once the colder climates come ??