Originally Posted By: timbo3416
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.
Quaker State Torque Power has been discontinued. It is a very good oil and there is some still around( on clearance usually )but long term it won't be just FYI.
My Brother has a 2006 250 SD w/ 5.4l( not E85 ). He replaced a 99 SD350 w/ 5.4L w/ 175K on it. He usually runs Mobil 1 5W-20 because he gets the best deal on it. He has run MTC synthetic( not the blend ), Penzoil Platinum, and Kendall GT1( full syn not blend )as well when he can't get the M1. I think his truck runs better on those other oils( ie; quieter and a bit smoother )than it does the Mobil 1 but he likes it and he has the longevity to prove it works.
His trucks are used for plowing and to haul lumber and a 16' enclosed utility trailer with our tools. Engine is worked HARD year round!
M1 will work as will QSUD, PP, Kendall, MTC, etc...