AMG1

How many miles should I break my 05 E55 that I just bought and has 13 miles on it? Its greatly appriciated, Thank you.

VelocitE55

Recommended break in from AMG is 1000 miles and for that 1000 miles, dont exceed 4500rpm and and no driving over 85mph.

AMG1

I will listen to you guys, but I would really like to take it up past 85 and really lay into the accelerator but I will keep it below 85 if its better on the car. Thanks for the Info.

GDawgC220

don't 'baby' the car...vary your speeds and RPM's so that the seals seat well and bond properly.

Obviously, don't go out and pound on it every time, but give it some good runs once in a while, don't stay at one speed and don't be afraid to full throttle it after a few hundred miles. These cars are meant to be driven so drive it

VelocitE55

I am just quoting straight from the owners manual. It is good to vary the speeds as long as your under 85 but I really wouldnt lay into it all the way, especially to the point where you make it kick down (downshift) untill your at least at 800 miles. Its not your average car and it would be good to adhere to the factory recommendations. Theres plenty of time to drive it like its supposed to be driven but the break in is crucial not only for the engine, but for the whole drivetrain as well. Just my .02 cents.

GDawgC220

oh definitely. I guess I should clarify my post a little :p

vary your speeds up to 85 and RPM's. Don't let it upshift at the earliest shift point...give it some gas and let it upshift 3-4-4.5k so it gets some RPM band action

AMG1

Thank you for all the Comments and recommendations guys.

DerekFSU

Your sticker in the upper left of the windshield says 1000 miles but it also says 1500 km in German. Since the latter is lower, I'm going the German route and was cleared to do so by the dealer. In addition, my neighbor owns a Mercedes dealer and laughes at the whole break-in thing. Says how can you take European delivery if you can't get on it.

Marcus Frost

The break-in procedure stuff is really an overly-cautious way of preventing people from redlining the car while in neutral.

You can break in a motor properly in 1 evening, with a few highway jaunts. I have a little writeup from a good friend and fellow Supra owner who knows more about EFI & automotive engineering than just about anyone else I know. He's built race motors for just about every type of racing there is, 2-stroke, 4-stroke, carb'd, EFI, turbo, supercharged, normally aspirated, you name it. The last guy who followed his little guide wound up dynoing 14rwhp above 'average' in his stock Z06 at a well known tuner LS1 tuner in Texas, where they found it hard to believe he was stock.

He broke in his Z06 using my friend's method... in one night.

-m

VelocitE55

I have heard many times over that break in periods are BS and thet the factory bench tests the engines beforehand but keep in mind that break in periods are not ONLY for the the motor.

Srgtfury

Seems as though I recall something in the manual about keeping the tranny setting in the "C" position for the 1st 1K also.

Thank you very much

Fury

Beowulf

I'm very interested in reading the writeup - would you mind sharing the info with the forum?

Mattar

Same here i would love to read the write up plz post

Noredline

It may be the same write up that I saw where the first 20 miles are the most important, and that it is better to drive it hard immediately, get some rpm's up and build backpressure, hilly terrain is better. I also spoke with the guys at DynoComp, here in town, they said the same thing. You can break in the car the first night. I would like to see the writeup also, maybe it is different. I am concerned about what some say about long periods at the same speed. I will be driving mine about 900 miles on the freeway starting with about 40 miles. Should I not keep at 85 constantly? Sounds like a bad idea to me.

GDawgC220

you should definitely not keep it at one constant speed. vary your speeds so that the engine gets a good work out between different speeds and the RPM band. this gives the piston rings/seals the best type of 'break in' so that they seat properly.

how your engine 'breaks' in and seals bond can affect performance, oil consumption and fuel economy down the road.

Noredline

Thanks CDawg, hey, how bout 900 miles of 0-85 sprints? J/K I will take it easy, but it will be very hard not to "get on it" I can be patient though, lots of time to have fun.

michakaveli

Please do tell. We're all dying for more goodness to read

dinko

I'm also interested in the write up.

cntlaw

my school friend worked 25 yrs in car repair shop specilised in BMW and MB , once recommended my 'new' E320 W211 should not go beyond 3500rpm for the first 5000 km. I did follow the discipline. I used the W211 for three years 38000km, not a trace that the transmission had any response problems, nor any strange sounds. It shifted gear smoothly like the day-1 was.
I must say, E320 W211 had given me three year feel of the best and most responsive transmission. Only God can create the W211 transmission.
I would let the smart arithmaticians to work out the magic forumula for E55 owners.

cnt

DFW01E55

I will tell you what a highly placed AMG official told me when I asked the same question:
"That depends, are you buying or leasing?"

According to the same guy, AMG engines are not bench tested (broken in) beyond a volume/leak test that is so well validated, that they have zero failures after the test.

cntlaw

Thanks . Very professional info.
My C55 is now run 1000km , How can I tell whether it is through or not? Any guidelines to veriify by myself.
tks

cnt