Macca

This thread is so funny.

So what does the USA manual say about break in for a standard 991 Carrera S? Surely if the article (which has been pasted into previous engine break in threads on this board already) is correct its 2000 miles?

So why does the manual for every other country in the world state nothing about the 4000 rpm?

Doesnt that make you curious. Plus two of us taking ED on here have been given different information from the factory.

Each to their own. If you have the patience to drive this wonderful machine at 40% of its rpm capability for most likely 10% of the ownership miles youll end up putting on the car then you are a paradigm of patience and good on you.

mwar99

Good luck keeping the rpm's down. Not an easy thing to do. Especially when a tunnel taunts you on your way home from the dealership...😈

Mike in CA

Macca, that's what I've been trying to find out. Exactly, what DOES the manual say ROW? Anything about break-in at all?

For me, this is the problem. I have to balance what makes sense to me, and what I've done all my car-owning life, with all of the different sources of information. When I did tourist delivery I was also told that, apart from being sure to vary RPM, it was ok to push the car hard because "that's how we Germans drive on the Autobahn". So do I follow the advice in my owner's manual and from the Porsche engineer who gave such a rational explanation (to my mind) in the article that was just posted, or the guy who's handing out cars to customers at the delivery center?

There's lots of info out there, much of conflicting, and most of it anecdotal rather than scientific. On top of that, some of that info encourages behavior that's inconvenient, like having to drive your new GT3 slowly for some period of time. As has been pointed out, every person has to evaluate their own personal situation and plans for the car, take all the information, and make a decision on how to break-in their new $150K toy. For example, if you're only keeping the car for a couple of years you might reach a different conclusion than if you plan to be a long term owner.

I believe that, long term, an engine benefits from a moderate break-in for the reasons stated in that article. I plan to keep my car a long time so for me, the course of action was clear. For someone else, their mileage may vary.

hfm

The Brits talk about it here:

http://www.pistonheads.com/gassing/t...eally%3F&mid=0
http://www.pistonheads.com/gassing/topic.asp?t=1330172

It's not clear, at one point it sounds like they have different guidelines, elsewhere, it sounds like they have the same.

Macan UK reference running in as opposed to breaking in and cite the same article.

http://www.macanownersclub.co.uk/for...630_page1.html

Upon further search, I also found it referenced here:

https://rennlist.com/forums/991/7068...tructions.html

Dan (should call Chris Harris and find out what ROW manual says )

reidry

Check posts 16 and 23 here:

https://rennlist.com/forums/991-gt3/...-period-2.html

Aren't those the UK and US manual sections for running in?

Ryan

Mike in CA

So not a big difference, despite the repeated references to how break-in only applies in the US. Yes, the UK manual doesn't specifically mention 4200 RPM, but it does mention no driving or track events where full throttle/high rpm use is a given. It also doesn't mention not lugging the engine or causing it to labor which we can all agree (I think) isn't good to do...

The US warranty is twice as long as in the UK. Maybe that's one reason why Porsche is a little more picky and specific about suggesting how cars here in the US are broken in.

ipse dixit

Nail meet head. Time to be hit.

kon5t

consider it confirmed

kon5t

frankly, the former will produce more power. I will buy the one that feels best/quickest/etc

kon5t

maybe, but their advice on brake pad break-in is ****!

Is this a good time to ask what oil is best?6

Macca

Never any argument about the ROW vs USA manuals mentioning a running in procedure. Key difference is 4200 rpm which is under 50% of the rev band and is a significant addition to the USA manual IMO.

If you put aside the 3000km stipulation in the ROW manual then it reads exactly as the PAG employee told me at the factory. As Ive repeatedly said he stated to run the car in with 7000 rpm max (this is around 80% of maximum revs) for first tank varying throttle and not running up to 7000 until warm then after that drive it like I would normally drive it. Thats exactly what I did. In 3500km the engine felt stronger and i sued a total of 250ml of oil in that time. Did I hit 9000 rpm - heck yes on a few occasions always once engine was well warm. Did I sit between 7000-9000 regularly - no as its not a comfortable zone to cruise in and the car was used for touring long distances.

Then Kabamm I cant use my car any longer because in Switzerland and Italy a car caught on fir after 200km!

So what happens next. I wait a long time get a fat cheque and a new engine, and I repeat the same break in bit this time I spend much more time between 7000-9000 rpm. I go to the track at around 1000km (600 miles) for one single session and its just wonderful (the other 2 NZ new GT3s I know the owners of in NZ actually took the car to the track at around 400 and 600km!).

Then I stated talking to many of teh GT3 action group members in Europe the ones doing serious track work on the new engine. Its summer when they get their car back and they waste no time going to Spa and putting in some tough laps.

I think for many of us we had the pysch on the second engine of "life too short weve waited montsh and 3000km taking it easy to have the car off the road for 3-4 montsh and a new engine so this time we are giing to give it plenty and try to break it because if they havent got it righjt a second time well take our money back and run thanks!". Thats crtainly the thoughts ging through a number of our European and UK owners I can tell you right now and it crossed my mind too. Not that I followed the US break in but if I had done that for a few montsh and 2000 miles to loose my car for 4-6 montsh then have to do it all over again i would have been mad.

Mike, totally respect your POV. If I had the time and patience I might do it like you too but I have 10 weeks a year to drive this car (I live in a different country to my car as most know) and Im young and impatient and life's way too short for me to spend almost year at my current usage breaking it in.

As the the engine and the car itself it seems to use less oil than some on the track and no more than others, it doesnt smoke and now with over 2000 miles on the new engine it feels fighting fit.

There is no right or wrong answer to this questions - the factory took that option away when they gave one market a different set of instructions from the rest of the world so make up your own mind, be sensible and just shut up and drive ;-P

Mike in CA

And the basis for that statement is.....?

kon5t

experience

Mike in CA

And I yours, Mark. If I only had 10 weeks a year to drive my car, I'd have been pretty damn impatient too and would likely have done exactly what you did.

This subject is interesting, and every time it comes up we learn something so I don't think it's a waste of time to continue the discussion and ask questions. Regardless, I wouldn't presume to tell someone else what they should do with their car as everyone's situation is different. I just know what feels right to me.

rockitman

Like this article...applying to now old motorcycles ?
This article was popular when the 996.2 variant was out in 2004.
http://www.mototuneusa.com/break_in_secrets.htm