Engine break-IN
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Senior Member
Joined: Jan 2000
Posts: 673
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From: Austin Tx
Engine break-IN
How should I break this truck in?
Run it hard?
Take it easy?
In the past I've run new trucks/engines hard from the start and just tried not to hold constant speeds for long periods of time. Is this OK with the NA 5.4?? In my Lightning I ran the crapp out of it from day one until about 18K. Then after adding all of the mods I started taking it easy one her. Never had a problem and it had near 50k when I sold it. I know thats not that many miles but I have friends that did the same and now have 75k pluss.....but then again I also have friends that nuked theirs
Well any suggestions 
I really like this truck
Run it hard?
Take it easy?
In the past I've run new trucks/engines hard from the start and just tried not to hold constant speeds for long periods of time. Is this OK with the NA 5.4?? In my Lightning I ran the crapp out of it from day one until about 18K. Then after adding all of the mods I started taking it easy one her. Never had a problem and it had near 50k when I sold it. I know thats not that many miles but I have friends that did the same and now have 75k pluss.....but then again I also have friends that nuked theirs
Well any suggestions I really like this truck
Senior Member
Joined: Oct 2002
Posts: 5,358
Likes: 1
From: Commerce Twp, MI
If you only plan on owning a vehicle to put 50-75k miles on it, I would say it doesn't matter a whole lot as long as you change the oil regularly.
I break in my engines easy for 1000 miles, change the oil, then progressively turn up the engine speeds.
I break in my engines easy for 1000 miles, change the oil, then progressively turn up the engine speeds.
Senior Member
Joined: May 2003
Posts: 374
Likes: 0
From: KC,MO
yeah break it in gently, i had 500miles on mine and it still wasnt broken in enough, i stomped on the gas one night and it made the nastiest scariest sound ive ever heard, now ive got 6,000miles on it.....and thats in 2months 
