I have a 2008 F-150 with the 3V 5.4. I run it with E85 80%+ of the time and was wondering what the consensus was as to the best oil. I have been running Mobil 1 5W20 but saw some positive things written about Quaker State Q Torque power. I do pull a boat with it from time to time. I am sending oil off for analysis from my first change tomorrow. Thanks to all for any valuable insight.