fireo

About to take the jump on buying a new 07 ML 63, my current car is a 2004 Cayenne Turbo. I didnt want to get the new facelifted cayenne since its not really a major change and i was quite surprised with the performance of the ML. I did the stupid thing of buying a chrysler srt8, it was fun in the begining but then i just got sick of it and ended up driving my cayenne more. Any pointers on the break in period if any? I remember with porsche it was really a grey area and no official word on how long to go below 4,000 rpm. I was thinking either black or that greyish silver i saw on the E63 launch. Would appreciate any feedback or comments.

Thanks

brt3

Welcome to the club! This seems to be a huge source of different thinking; if you search the thread you'll find a couple of existing discussions. The primary schools seem to be:

1.) The factory knows best and you should stick with their break-in
2.) If you break it in hard it will be a faster car (call this the E55 method, as that seemed pretty prevalent on that thread)
3.) The "Motorcycle School Of Break-in", which stresses specific usage and rev patterns to cycle the engine to better seat the rings

Personally, I think something between #1 and #3 makes sense. The problem I have with #3 is that there are enough differences between motorcycles and cars -- rev range, torque, and cooling issues -- that I don't think Theory #3 is completely applicable to cars.

Ben

For the E63, I believe the recommended break-in period was the first 1,000 miles and the following:

- varied speeds
- no kick-downs
- below 80 mph
- below 3,500 rpm
- Comfort mode only (do not use Manual or Sport modes)

Enjoy your new ride!

Can Drive 55

It was 4,500 RPM for my car.