sccchiii

I was told the same...

Serge944

There's a million opinions on this - even among experts.

I'll say this though - shifting 200 rpm short of redline will prolong your engine life more than any break-in procedure.

irish guitar

I'll say this though - shifting 200 rpm short of redline will prolong your engine life more than any break-in procedure.[/QUOTE]

^ and probably prolong (or at least, enrich) your own life in the process.

Vivian

KenU

I have about 120 miles on mine and have been up to 6.5-7k, albeit only a few short times. I am at about half a tank+ of gas and will wait until a new full tank to drive it "like I stole it", where safely doable, of course. I don't think there's real opportunities to do 9k for any extended period here on northeast local roads or highways unless one enjoys attracting law enforcement. I'm headed to the track (DE) sometime in the next month.
Vivian posted "life is too short" or words to that effect. I, for one, am not waiting 2,000 miles to enjoy mine.

Mech33

Buzz kill!

WernerE

Any data to support this?

I doubt very much adhering to Porsche's break-in procedure causes more issues than willfully ignoring it.

911dev

Sure, increaseed piston speed yields more wear.

sccchiii

^Not sure I agree.... I personally think I will prolong my life if I use up all 9k.....at that rpm it's like a drug and the last 200 rpm is hard to say no to!?

kyrocks

The break in described in the manual is only for North America cars. Not listed in the ROW cars.

Serge944

No, not really, but as an engineer, it's just common sense to me. The relationship between stress and life is shown in the chart below. Why do you think a GT3 cup race engine gets rebuilt at 40 hours, where the mechanical components are no different than the street car (in the case of a mezger). If you spend all your time bouncing off the rev limiter, your street car will need to start being maintained like a race car.

Serge944

By the way, I'm not inferring that break-in isn't important and it should be ignored.

mooty

no one here keep cars that long. so dont worry too much.
just drive the god damned car.
step on it, if it's going to blow up, it will blow up, no matter what.

Mike in CA

Fair point, and one reason why I think there's so much disagreement on this subject. For those who are turning cars over every year or two (or less) there's not much reason to worry about break-in since any potential problems are going to show up further down the road with some future owner.

But it's not "no one here". I know there are others like me who aren't constantly chasing the newest thing and keep their cars for a while. For me, doing a proper break-in is long term insurance.

Maverick787

This topic will never have closure for the following reason the dealers don't follow the process, and they laugh when you ask them. The guys I do trust at the dealer say enjoy the car, and drive it ...........it will not break. My buddy took delivery of a brand new RS 4.0 on the track in Germany with Porsche ....guess what he did a hot lap with their pro. Years later card still runs fine no issues. I'm with Mooty on this one, but this equation will never get solved.

Tosilog

I waited until 1500 miles before I hit 9000 rpm. Prior to that, I was mindful of breaking in the other components (e.g. transmission, suspension, etc) as well.