Originally Posted by
MikeWolfe
MOst of the 5.0's are flex fuel engines.
Does yours have the "FLEX FUEL" label on the tailgate?
At any rate your engine will probably perform better with a higher octane fuel.
FYI All:
The August Issue of Motor Trend has a test of the 2014 Chevy Silverado
The 5.3L FLEX Fuel Engine in this truck is rated at 355hp & 383lbft of torque on gasoline. It is rated at 380hp & 416lbft of torque on E85
Check it out on page 122 of the August Issue of Motor trend.
I am pretty sure the result would be the same for the 5.0L DOHC Ford engine in your truck. I am sure it increases the torque in my ECO Boost engine at least 20%. Interesting??
Yes it is a "flex fuel" 5.0.
So you're telling me that it should increase horsepower and torque as well as run cleaner? I just filled up yesterday with 87 so I will have to wait about a week before I try it but I am looking forward to giving it a shot.
So after I fill up with e85 I should stick with it until my next oil change and then fill up with 93 octane?