I just bought a 5L F150 and shook my head when they told me it's rated to tow up to 10,300lbs
In my opinion a 1/2 ton truck shouldn't be towing anymore than 5500lbs not because the motor/tranny can't handle it but breaking and stability of towing a heavy load
saying all this my tournament partner has the 3.5 eco boost and I have the 5L even though Ford says the eco boost is better for towing both of us agree my truck does a better job and also gets better fuel economy while towing both his and my boats around
Dan