The best way to keep your first generation (2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018 and 2019) Ford Flex running reliably for many years is to regularly change the motor oil and replace the oil filter on the Duratec 35 3.5 liter V6 engine. Check out my DIY tutorial for the procedure (with the compatible replacement oil filter part numbers, oil capacity and drain bolt torque specification) by clicking on the text link or thumbnail image below.
2009-2019 Ford Flex Duratec 3.5L V6 Engine Oil Change Guide
