Break In?

[FlyinMerc]

Am I bad? I redlined it twice today, only 240 miles on it. Been keeping 3500 rpm or less last ten days, got on it hard today. It was fun but now I feel guilty. Gonna change the oil soon, get all the aluminum bits out from manufacturing. Comments?
:confused:

[CRUZTAKER]

Just vary your speeds and driving conditions. Technically, yeah, you shouldn't run it that hard during the basic break in period. But if the motor is warm, wtf....we all broke the rules once or twice in the early miles....:rolleyes:

[Sactown]

Am I bad? I redlined it twice today, only 240 miles on it. Been keeping 3500 rpm or less last ten days, got on it hard today. It was fun but now I feel guilty. Gonna change the oil soon, get all the aluminum bits out from manufacturing. Comments?
:confused:
Go for the early oil change, but I have no idea about break in. Officially, I'd follow what the manual says to do. Beyond that, everyone has a different opinion.

[MICA Racing]

Don't make a habit of it, but it shouldn't hurt anything. Engines don't spontaneously explode because of running them hard in the break-in period. The main thing to watch is to vary engine speed to keep things moving until they settle into their permanent positions.

[FiveO]

Break it in like you're going to drive it.

My brand new 1995 CV PI...got it on July 4th, 1995. I had 120 miles on it and our dept. got a call of a bad car crash. I did 125-130 for about 15 miles.

For the next 4 years while I drove it it was consistently the fastest in the fleet. I had a lightbar on the top and could outrun the slicktop squads.

Never leaked oil, no problems with it at all. I put 110,000 miles on it and only changed brake pads, oil and tires.

[David Morton]

Five-O's right. What they taught me was, wind it up frequently and then cruise a little. Getting the rings to mate-up with the cylinders quickly is the idea and WOT washes a little of the oil off the rings to do this. Letting off to cruise lets the oil get back up there so they don't starve for oil. This is probably best if you don't have a blue light licence to drive 120 mph for 15 miles. I'm about to hit 1250 and plan to drain&fill it and then at 2500 change the filter as well. Oh, and nobody is going to be putting a dry filter on my car. I plan to do all the fluid changes on mine.

[rookie1]

The tighter machining production tolerances and lubrication technology have eliminated the need for a break in period on most modern motors. I think General Motors Corp. has even removed break in instructions from their owners manuals.

[metroplex]

When I first got the 2003 5.4L SOHC V8, I drove it lightly for the first 50 miles and couldn't stand lugging it around so I started stop light racing with small cars and changed the oil first at 500 miles then at 1000 miles, and every 3k thereafter. That's what I did with the Crown Vic as well.

[merc406]

Break it in like you're going to drive it.

My brand new 1995 CV PI...got it on July 4th, 1995. I had 120 miles on it and our dept. got a call of a bad car crash. I did 125-130 for about 15 miles.

For the next 4 years while I drove it it was consistently the fastest in the fleet. I had a lightbar on the top and could outrun the slicktop squads.

Never leaked oil, no problems with it at all. I put 110,000 miles on it and only changed brake pads, oil and tires.





Exactly, ^^ you don't want a ridge buildup at the top of the cyl wall from driving like grandma, keep that ridge high up their by gettin on it. :burnout: