I always wondered where Frito Lay got that catchy Doritos phrase "Don't worry, we'll make more" Must have been the Porsche engine plant

 

Preaching to the choir here!

You got it! Drive it! Just passed 33k miles.

 

Chup, have you noticed any difference in the performance from 2k, to 10k, and 20k? I have the X51 also, but with the 7 speed manual. I am only over 700 miles and have decided to follow the 2000 mile/4000 RPM break-in. Schedule finally allows me to start driving the car regularly, so the miles should accumulate much more rapidly now. Just curious about the character of the car past two, ten, and twenty thousand as others have said that is when the engine is "really" broken in. Thanks!

 

I guess, I've never really understood the preoccupation with 3,000 mile oil changes and overly conservative break in periods on any car..

But the reality is, unless you are keeping it well past 100K miles, most of the PM items and careful breakins on any car are for the guys who own it later on.....

Yeah, yeah I know the 911 is a more complicated, high performance and refined machine than a Toyota Camry.. And I'm not suggesting not maintaining and being reasonable on the break-in..

But things like changing the old more frequently or treating the rev's gingerly during an extended break-in period only help the next guy..

If I'm going to keep for less than 30 or 40K miles, I'm not wasting the first 5K miles of my 911 driving it like an old lady...

I realize it is a different animal, but I'm used to Piston Aircraft Engines which have a projected life of 2000 Hours before overhaul (known as TBO) and wear best when run almost wide open. And have a break in period of 100 hours. (actually the break in period on those isn't not running wide open, but varying the RPMs as well as not sitting at idle for too long). But I know that's a different animal all together. But I suspect a 911 engine will be just fine unless you are racing it...

 

In my opinion, the best thing to do is to vary the RPM's for the first few hundred miles. Make sure you rev the engine all the way to red line every now and then. The worst thing to do is to pamper the engine. These engines are designed for high RPM's and hard accelerations.

 

+1 if yours is leased why do you care??? i don't get it

 

You really won't notice a difference. Remember it's less than 10% of a change. Its very subtle. The only way I could tell was on the track. Much faster acceleration on straights. I was able to get to 140ish quicker and from a slower speed in the same amount of distance. I did have this installed afterwards, as it was not yet available when I purchased the car. If I were to do it again, I'd save the money for other items. Yet I do like the third radiator and the rareness of it.

 

Planning on keeping it for the long term, unless it becomes a big disappointment. So, pampering it for myself. I'll bounce it off the rev limiter after the manufacturer says it's okay. The car, like modern aircraft/ airliners will nark on the driver/pilot when limits have been exceeded. If there is an engine problem that develops while I own it, it just gives them ammunition to possibly point back to not following the break-in recommendation. I can wait 1200 more miles.

For those already past the 2, 10, and 20k mark on the odometer, is the performance noticeably better than with lower mileage and new?

Thanks

 

Thank Chup,

Just saw the response. I figured the X51 would not be very noticeable, but still a subtle improvement for a lot of coin. I was referring more to the engine itself after accumulating some higher miles. Have heard they really come alive (break-in) past anywhere from 10-20K miles. Have you experienced any noticeable change beyond 10 and 20K.

 

I can't really say that I have to be honest. Again, I think it's a subtle change that I haven't noticed. Maybe if I got back in the car after a 5k mile absence, I may notice a change. But as it's a daily driver, it's just the same beast to me.

Adding a brick to the pyramid daily, you don't see a big change. If you come back to it after a week and the bricks are still bring added, you will see the change. May not be the best analogy.