Is it really necessary to break in an engine? When i lease my 07 F-150 I pulled it off the lot with 10 miles on it and put it to the floor boards and it went like a bat out of hell for 2 yrs. Are they already broke in from the manuf. plant?

I ask this cuz i rebuilt my 5.2 in my ram and im sick of pampering the biotch. I really just want to hammer down and tear **** up. Any answers to my question?

 

when ever i change an engine, tranny, or clutch, i go 500 miles before i beat on them, and i havent had a problem

 

well im about 70 mile away from that. But that wasnt the Q at hand.

 

from the plant i dont know, i had an 07 focus, and i beat the **** out of it from day 1....and it died at 27K... ones in the showroom would need to be


but you have a rebuilt motor in the 5.2. now that i would wait 500 miles

 

Yeah, it essential to a long life of an engine, espcially if you re-built it. Drive it for 1000-1500 miles before beating on it.

 

yeah thats what i thought