If a doctor told you to take a pill 3 times a day for 7 days, would you take it once a day for 10 days because a friend told you he did this and it worked?

if a lawyer told you to not sign a contract, would you sign it anyway because a web site said it was ok?

if an electrician told you not to overload a circuit, would you do it because your uncle did it without a problem?

if you were told not to eat a plant by the florist, would you eat it because a friend did and said it tasted good?

if yor car manufacturer told you not to exceed 4200PRM for the first 2000 miles, .......

 

You are assuming that all these people mentioned above actually know the correct advice to give. Doctors regularly prescribe incorrect medication and medical procedures for an individual, often simply doing so becuase that is the current treatment preferred and recommended by the AMA. Insurance payment is also a major factor in what meds and procedures are prescribed. Examples are many and incude hormone replacement for woman, statins, stents, and on and on. All thought to have less health risk substantially less than actual.

By your logic, had you had a mental illiness such as schizophrenia a few decades ago, you would have follwed you doctor's advice and gotten a lobotomy. Would THAT have been the best treatment simply because the medical community said it was?


If you are not an educated and informed consumer, I guess you are stuck followinng the "so called" experts. For some of us, we'll do the evaluation, educate ourselves and make an informed decision. Many recommendations are made because the person does not know any better. But just because they haven't figured out the correct answer, it doesn't mean some of us haven't.

 

yes, doctors do prescribe treatments that later turn out to be incorrect, but at the time they are prescribed, they are felt, based on the evidence, to be correct

Hormone replacement was felt to be beneficial to the heart, bones etc, before the Nurses study showed this is not true, so the advice was changed. Recent evidence however, now indicates that HRT may be safe for women in their 50's

The evidence on Statins is overwhelming, they save lives and prevent heart attacks. yes, they have side effets, but 80 mg of lipitor is safer than 81 mg of aspirin

Stents were found to be a problem if they are drug covered (DES), when this was found out, recommendations were made to stay on plavix indefinately.

The point is, as new data becomes available, the recommendations are changed.

Where is the data that Porsche's break in period is wrong?

BTW, in 35 years of practicing medicine, I have never received a recommndation from the AMA on how to prescribe.

 

Jeff NJ
When I asked how long a racing engine is supposed to last ,
I did not really expect you to answer it .

I asked it in reply to your statement :
"When a racing motor is built , do you think they keep the RPM down for 1000 miles before opening it up ?? "

My point is that it's absurd for you to suggest that it's not necessary to break in a mass produced production engine , because racing engines are not
" broken " in either.
A racing engine is intended to hopefully last for one race, or a few at most, depending on what category of "race" we are discussing.
Then it's rebuilt or replaced.

I am somewhat hopeful that my engine, transmission and the rest of the parts will last for a few YEARS, not just a few RACES .
That's why , as an Engineer, I will "break it in " gently , don't drive continuously at minimum 6500 RPM and I will change my oil at ~ 5-6 k miles intervals (because I believe that clean fresh oil is better than dirty oil )

Ultimately, it's your car and you can treat it however you like.
I don't buy used cars .

 

How dare you question the Porsche' GODS!!! You are not allowed to make decisions based on your own experience and knowledge. Follow all recommendations that are in the manual.....or the subsequent TSB, or the next TSB or,the next one..or next one, or next one, or next one, or next one.....


Porsche is working hard to build engines that are allowed to burn up to 9 GALLONS of oil between oil changes. Don't distract them from their percision building.

 

Dave

 

definitely hold yourself below around 5k rpms for atleast 800 or so miles and vary the engine speeds during that time...

as others have said, what your REALLY breaking in are your diff and tranny which DO have problems if break in is not somewhat followed...you are also lubricating all of the moving parts in the engine and also clears out the system of any small stray metal bits...



Also, in my experience, the cars that have been broken in perform better after break in than the cars that never followed any break in at all...but thats just personal experience...

 

Originally Posted by C2S4ME
"For those that do not know or understand the dynamics taking place in a newly manufactured internal combustion engine I would think it prudent to follow the manufacturers oversimplified and conservative break-in procedure.

I spent my entire professional working career (35 years) in the high end/high performance German automobile business (Porsche and BMW). It was my professional experience that the only time I ever saw a break-in related engine problem was when the new engine was babied and not put under a load. A new engine must be put under load (on a new engine that load should be short in duration) to facilitate break-in (seating the rings).

I am careful with a new car on the clutch and brakes for the first 300 miles or so but after the oil is up to temp I drive the car like I intend to use it."


what area of the auto business are you in? sales? finance?, warranty? mechanics?

Also how do you know how a car is broken in? Do you think a person who abused his new car and subsequently has a problem, is going to admit it?

Antedotal evidence is not meaningful, controlled scientific studies are.

If a new engine must be put under load, why does Porsche not rcommend this?

 

^^because the ENGINE may need to be put under load, but the diff and tranny really do need time to buck up...thats why they WANT you to vary your engine speeds and to hit a couple of peaks is it not?...its not saying you cant EVER venture past 4-5k or your car will explode...so you can still put it under load without it getting beat...maybe that or the lawyers dont want to tell you to use all 325hp or 350 or 420 or 480 etc hp on the road bc they could get in trouble...haha...dunno...

 

If it;s a lease and you wont care about the next ownere then NO!

 

Don't break it in...just break it!

 

Normally its about 500miles for most vehicles in general