"Breaking in" the first 5000 miles on your new 'stang - Ford Mustang Forum
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post #1 of 22 (permalink) Old 04-29-2010 Thread Starter
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"Breaking in" the first 5000 miles on your new 'stang

I was wondering if it's still needed to "Break in" the new car for the first 5000 miles or so. As in staying below 60 and not accelerating that fast. My father and friends have always told me about that, but I'm not sure if those same concepts apply to cars today.

I really want to let my GT shine when I first get it....

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post #2 of 22 (permalink) Old 04-29-2010
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Everything you need to know will be in your owner's manual. The procedure for the 4.6L was varying the RPMs for the first 1,000 miles, nothing more. I did that and drained the factory fill oil at 500 miles.

Once the car is warm and the engine temp shows "Normal" range, feel free to put the hammer down.


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post #3 of 22 (permalink) Old 04-30-2010
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The first 1000 miles I ride it easy but vary the rpms and speed, usually keeping it below 75. At the first oil change I also move to synthetic motor oil. Other then that, all's ok.

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post #4 of 22 (permalink) Old 04-30-2010
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I went easy for the first 1,000 miles, then got an oil change, to get any moving parts out. and then let her rip

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post #5 of 22 (permalink) Old 05-02-2010
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I hammered my 06 on the way home, hit 117 I believe, 2 days later I pulled up to a mishitbishi that had a plate that read "8 UR V8". So I toasted him!!! I have a 60k miles with no issues.

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post #6 of 22 (permalink) Old 05-02-2010
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I'm usually not this confrontational, but most of you guys haven't the foggiest idea of what you are talking about, and certainly haven't read the manual that came with the car.
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post #7 of 22 (permalink) Old 05-02-2010
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From my manual:

Your vehicle does not need an extensive break in. Try not to drive continously at the same speed for the first 1,000 miles of new vehicle operation. Vary your speed frequently in order to give the moving parts a chance to break in.

Do not add friction modifier compounds or special break in oils during the first few thousand miles of operation, since these additives may prevent pistion ring seating.


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post #8 of 22 (permalink) Old 05-02-2010
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Quote:
Originally Posted by pcfrisch View Post
From my manual:

Your vehicle does not need an extensive break in. Try not to drive continously at the same speed for the first 1,000 miles of new vehicle operation. Vary your speed frequently in order to give the moving parts a chance to break in.

Do not add friction modifier compounds or special break in oils during the first few thousand miles of operation, since these additives may prevent pistion ring seating.
Yes. And if I remember correctly, it does not recommend changing the oil until the mileage or time service interval specified in the manual.

Changing the oil after 1000 miles to "get the metal shavings out" is about as appropriate as putting leaches on your body to treat diabetes.
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post #9 of 22 (permalink) Old 05-02-2010
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I don't di anything special except for riding the cruise control betwen 65 and 80 IF I'm on the highway.

No sythetics or special oil changes. I do try to stay below 5,000 rpms for the first bit but you know....s**t happens.

Drove the crap out of my old V6. 97k miles and only tires and a battery.


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Sorry officer my manual said i need to vary speeds for the first 1,000 miles so i started at 1 mph n am workin my way up from there lol

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Quote:
Originally Posted by Forster Bittner View Post
Yes. And if I remember correctly, it does not recommend changing the oil until the mileage or time service interval specified in the manual.
I follow this guidance and I don't start using synthetic oil until the first scheduled oil change.

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This is an issue I'm struggling with a little bit as well. I was planning to take a pretty long (i.e. 1200 mile) trip not too long after getting my new GT, which means pretty much constant speed for a lot of hours. I suppose what I could do to mix it up is just burn a little extra gas running at higher RPM's and/or drive lower speed for some parts of the trip, but since I don't really understand the process that well, I don't know what the best approach would be.
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Most owners manuals state NOT to use synthetics and to only use CAE certified oil of the correct weight.

Does anyone know WHY? Because i have asked and can not find an answer.

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post #14 of 22 (permalink) Old 05-03-2010 Thread Starter
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Quote:
Your vehicle does not need an extensive break-in. Try not to drive
continuously at the same speed for the first 1,000 miles (1,600 km) of
new vehicle operation. Vary your speed frequently in order to give the
moving parts a chance to break in.
Drive your new vehicle at least 100 miles (160 km) before performing
extended wide open throttle maneuvers and at least 1,000 miles
(1,600 km) before towing a trailer or before performance/competition
conditions. For more detailed information about towing a trailer, refer to
Trailer towing in the Tires, Wheels and Loading chapter.
Taken from the '11 Manual

What does it mean about the extended wide-open throttle maneuvers?

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Quote:
Originally Posted by Allentown View Post
Most owners manuals state NOT to use synthetics and to only use CAE certified oil of the correct weight.
Does anyone know WHY? Because i have asked and can not find an answer.
I have used syn oil (Mobil 1) in my cars for over 20 years and my Harley since I got it. Never had an internal engine problem. I also have not seen that statement but I'll continue to use syn oil until someone proves it damages an engine.


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