11-13 5.0 Break-In Procedure?
Shelby GT350 Member
Joined: May 6, 2012
Posts: 2,060
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From: Crofton MD
Shelby GT350 Member
Joined: May 6, 2012
Posts: 2,060
Likes: 0
From: Crofton MD
I believe i have found something. Quoting from the manual 'You need to break in new tires for approximately 300 mi (480 km). During this time, your vehicle may exhibit some unique driving characteristics. Avoid driving too fast during the first 1000 mi (1600 km). Vary your speed frequently and change up through the gears early. Do not labor the engine. Do not tow during the first 1000 miles (1600 km).'
Change up through gears early? In an auto transmission?
Change up through gears early? In an auto transmission?
http://www.motorcraftservice.com/pub.../12musbs1e.pdf
That may be different then the GT but might be a better procedure.
Cobra Member
Joined: February 18, 2011
Posts: 1,023
Likes: 0
From: South Carolina
Originally Posted by conv_stang
I was at the drag strip with 100 miles on it. I changed the oil to full synthetic at 500, and change it every 5000 after that. 18,000 and still running like a scalded dog
I have always broke in my newly built motors on a dyno as soon as i put them together. I didnt drive them x amount of miles before i took my 347 notch to the track. So this "dont do this and dont do that above this rpm" is not correct. Well let me rephrase, side stepping the clutch or boiling the tires to the rim driving it off of the lot isn't wrong. The cars will hold up unless there's a flaw in the build.
Cobra Member
Joined: February 11, 2013
Posts: 1,203
Likes: 21
From: Florida
I drove it hard from day one. Modern motors are broken in at the factory. The "motor break in" belief comes from two places. One is shop built motors need to go through heat cycles. So people assume that any new motor needs it. Two is the OEM wants to have sanctuary from defects. If something screws up in the first few hundred miles they can blame it on poor break in.
Ultimately you can drive it how you want. There really isn't a right or wrong because neither will hurt it.
Ultimately you can drive it how you want. There really isn't a right or wrong because neither will hurt it.
Cobra Member
Joined: February 18, 2011
Posts: 1,023
Likes: 0
From: South Carolina
Originally Posted by typesredline
I drove it hard from day one. Modern motors are broken in at the factory. The "motor break in" belief comes from two places. One is shop built motors need to go through heat cycles. So people assume that any new motor needs it. Two is the OEM wants to have sanctuary from defects. If something screws up in the first few hundred miles they can blame it on poor break in.
Ultimately you can drive it how you want. There really isn't a right or wrong because neither will hurt it.
Ultimately you can drive it how you want. There really isn't a right or wrong because neither will hurt it.
Member
Joined: February 2, 2013
Posts: 21
Likes: 0
From: MD
I drove it hard from day one. Modern motors are broken in at the factory. The "motor break in" belief comes from two places. One is shop built motors need to go through heat cycles. So people assume that any new motor needs it. Two is the OEM wants to have sanctuary from defects. If something screws up in the first few hundred miles they can blame it on poor break in.
Ultimately you can drive it how you want. There really isn't a right or wrong because neither will hurt it.
Ultimately you can drive it how you want. There really isn't a right or wrong because neither will hurt it.
.
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