Proper Engine Break In ?
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This is a discussion on Proper Engine Break In ? within the Everyday Impreza Talk forums, part of the Community - Meet other Enthusiasts category; I apologize if this is in the wrong section. I searched in the search box and didn't find this topic. ...

  1. #1
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    Proper Engine Break In ?

    I apologize if this is in the wrong section. I searched in the search box and didn't find this topic. I'm sure I missed it so I apologize if I did.

    I just picked up a 14 STI and am trying to find the proper break in method.

    I just read two articles and they each had different opinions.

    The first article said run it hard from 1-4th gear.

    The other article said to take it easy and don't go over 4,000 rpm. This is pretty much what I've been doing.

    I read once not to use cruise control.... I have no clue why. I've been using the cruise.

    What are your thoughts ?

    Sorry again if I missed this thread being posted.

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    Registered User Ampliified's Avatar
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    You aren't supposed to keep it at a fixed speed for periods at a time and to vary your RPMs according to the manual keep it under 4,000RPM and you will be fine some say 1000 miles I know some who wait for 4,000 miles doing this.
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    Sammich Makin' Pwincess wrxtreme06's Avatar
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    I would follow the procedures outlined in the owners manual

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    Lando Calrissian DemonWRX's Avatar
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    This has been discussed many times before....we have beaten the reincarnated horse to death as well....Many are of the opinion that you need to fallow the manual to the letter, others are not.

    Now, I am not going to tell you what to do, it is your $25-35K investment, do as you see fit. I will just leave this article here for you to read, then make the choice for yourself.

    How To Break In New Motorcycle and Car Engines For More Power
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    The Member michaelwfox's Avatar
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    Quote Originally Posted by DemonWRX View Post
    This has been discussed many times before....we have beaten the reincarnated horse to death as well....Many are of the opinion that you need to fallow the manual to the letter, others are not.

    Now, I am not going to tell you what to do, it is your $25-35K investment, do as you see fit. I will just leave this article here for you to read, then make the choice for yourself.

    How To Break In New Motorcycle and Car Engines For More Power
    Read that article! Lots of good information and you can decide for yourself what to do.
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    Quote Originally Posted by DemonWRX View Post
    This has been discussed many times before....we have beaten the reincarnated horse to death as well....Many are of the opinion that you need to fallow the manual to the letter, others are not.

    Now, I am not going to tell you what to do, it is your $25-35K investment, do as you see fit. I will just leave this article here for you to read, then make the choice for yourself.

    How To Break In New Motorcycle and Car Engines For More Power
    Yep that's the one I was talking about.

    Wow I forgot the owners manual would have that info..... Oops

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    MAINEiac 11blackSTi's Avatar
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    Vary engine speed (RMP's). Don't use cruise. Don't go over 4K. (I personally like beating dead horses)

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    OMG WTF MainFrame's Avatar
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    Most people follow the method recommended by Subaru (easy on the throttle, keep it under 4k) with success.



    Don't use cruise, or drive for extended periods at the same RPM, at least for the first 1000 miles. No matter which route you decide (easy or hard), both advise against keeping the engine at the same RPM for any extended period of time.

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    He simply abides. SD_GR's Avatar
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    Why not follow what's already written in the owner's manual?

    The people that write articles haven't designed, built, or maintained hundreds of thousands of Subaru engines. The guys in the manual have.

    Will the people that wrote the articles you read guarantee your engine for 5 years or 60 K miles? The guys that wrote the manual will.

    I see no use in the opinions of websites. I'm being harsh, yes, but honest.
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    Registered User olenderc's Avatar
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    Though the "MotoMan" break-in concept does make sense in theory, an important thing he mentions is this approach has to be used within the first 20 miles of a car's inception.

    Realistically, between dealer swaps of cars, test drives, etc, most people don't even get their "new" cars with less than 20 miles on them. So are all those people supposed to return their cars because their rings didn't "seal" properly? That's just plain stupid.

    And the fortunate few who get their factory order with less than 10 miles on the ODO, are the only ones who will have the best engines (assuming they adhere to this MotoMan principle).

    Not to mention, Subaru must have some method of "testing" or "breaking-in" the production engines before they are confident enough to release them with a car. Wouldn't this also chip away at the magical "20 miles" of grace period you have to hone the best engine possible?

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    He simply abides. SD_GR's Avatar
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    The key word is "magical." There are no reproducible, statistically significant data to support his statements.

    Since there are no data, this isn't a rational discussion; it's a metaphysical issue. Those that have faith can go for it.
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  13. #12
    MAINEiac 11blackSTi's Avatar
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    Quote Originally Posted by SD_GR View Post
    The key word is "magical." There are no reproducible, statistically significant data to support his statements.

    Since there are no data, this isn't a rational discussion; it's a metaphysical issue. Those that have faith can go for it.
    Don't forget the unicorn blood for the 20 mile oil change.

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    Registered User RichD514's Avatar
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    Everyone knows that's just a myth.. The only thing that really works is adding 1 mermaid tear per gallon to the fuel tank on the 3rd fill-up.

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    Quote Originally Posted by SD_GR View Post
    Why not follow what's already written in the owner's manual?

    The people that write articles haven't designed, built, or maintained hundreds of thousands of Subaru engines. The guys in the manual have.

    Will the people that wrote the articles you read guarantee your engine for 5 years or 60 K miles? The guys that wrote the manual will.

    I see no use in the opinions of websites. I'm being harsh, yes, but honest.
    I forgot to check the owners manual.... I honestly didn't even stop to think that it might have that info in it.

    I don't know what I was thinking.

  16. #15
    Registered User XRedJar's Avatar
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    I followed the manual....more or less.

    I did not use any more than 5lbs of boost during the 1000 mile break in.

    For the first 500 miles, I kept the loads light....and under 4000 RPM

    500 - 750 - little more load....4500 RPM max
    750 - 1000 - less than 5 lbs boost, moderate loads, and 5000 RPM max

    I just started progressivly increasing loads and RPMs as I put more miles on it.

    Just my two cents
    2013 Ice Silver Premium 5 door - Stage 1 E-Tune

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