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    • A look at how AMG evaluates M157 Twin Turbo motors on their test bench - Is break in even necessary?

      Many Mercedes and AMG owners in general forget that the motors in their vehicles have been tested to strict standards before the motor is ever put in their car. Kind of makes old thinking regarding break in go out the window. Every single motor is run to redline and tested to make sure it was assembled correctly and that the motor is doing exactly what it should be. Just look at the glowing manifolds and exhaust form the high temps due to the motor being run hard for an extended period.


      Old thinking regarding break in is that you need to baby the motor to seat everything properly. The reason break in is recommended as well as an oil change early on is due to small metal fragments from the fresh parts that can be caught in the oil/motor. The break in is not so much to seat the parts which AMG already does before you get the motor but to protect from an early failure due to running the motor hard in case metal shavings were to get into the motor.

      As a matter of fact, a hard break in will usually result in a stronger motor with properly seated parts. Mercedes tests these motors hard as seen here. Don't fear running your own motor hard, it will love you for it. Plus, Mercedes already did.

      This article was originally published in forum thread: A look at how AMG evaluates M157 Twin Turbo motors on their test bench - Is break in even necessary? started by Sticky View original post
      Comments 31 Comments
      1. Sonny's Avatar
        Sonny -
        Click here to enlarge Originally Posted by Sorena Click here to enlarge
        Well that's odd. My uncle had a 230SL and that car had limited slip diff! The 6.3 SEL from 60's had it. Why they didn't offer it as standard in C63?
        I guess just a business decision. Many buyers don't think about it or know about it. So, MB can make a little extra coin by selling it as an option. I assume dealerships would prefer to order the car without the option because it makes the car less expensive for prospective buyers.
      1. PetroC63's Avatar
        PetroC63 -
        Click here to enlarge Originally Posted by Sonny Click here to enlarge
        I guess just a business decision. Many buyers don't think about it or know about it. So, MB can make a little extra coin by selling it as an option. I assume dealerships would prefer to order the car without the option because it makes the car less expensive for prospective buyers.
        +1

        I was just about to say the same. Definitely a cost driven decision.
      1. andrew20195's Avatar
        andrew20195 -
        Click here to enlarge Originally Posted by Sonny Click here to enlarge
        Does AMG have the time and resources to do this procedure for every engine they produce? Seems overly time consuming.
        AMG does not produce a high volume of engines, and I imagine there is a decent profit margin on each one.
      1. LZH's Avatar
        LZH -
        Click here to enlarge Originally Posted by andrew20195 Click here to enlarge
        AMG does not produce a high volume of engines, and I imagine there is a decent profit margin on each one.
        Depends on what you call high volume.

        By my count they made approx 14,264 M156 motors. And that is just for the United States.

        http://www.topgearage.com/?p=260
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Sonny Click here to enlarge
        Does AMG have the time and resources to do this procedure for every engine they produce? Seems overly time consuming.
        I don't know if they are all tested in that manner but they definitely run all the motors to redline and hard.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Sonny Click here to enlarge
        You could sort of infer that an engine oil of diff oil change is okay at 1000 miles, but it doesn't say to do that. Pretty strange wording if you ask me.
        Strange wording but even for OEM motors an oil change, diff oil change, is recommended when finishing the break in period.
      1. Even Money's Avatar
        Even Money -
        What oil they install at the factory? M1? OR some type of break in oil...
      1. Sticky's Avatar
        Sticky -
        Same oil it says in the manual I would think.
      1. Itsbrokeagain's Avatar
        Itsbrokeagain -
        I know Benz uses a special cotton gauze type filter that is put on at the factory, it is different than the standard paper style oil filters they use at the dealer...this is the way they can tell if its been changed or not.

        Same thing Nissan does with most of their cars, including the GTR. Factory oil filter has a '1' on it, says nothing more. You cannot get another filter with that designation it, same covering their asses.
      1. SSO95's Avatar
        SSO95 -
        Click here to enlarge Originally Posted by blkclk550 Click here to enlarge
        all my cars get paddle to the metal from the dealer and make sure i hit the top speed limiter.
        cool story bro
      1. blkclk550's Avatar
        blkclk550 -
        Click here to enlarge Originally Posted by bmwtek Click here to enlarge
        cool story bro
        basically