New 2013 Duramax LML maintenance
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New 2013 Duramax LML maintenance

  1. #1
    Senior Member jdekruyf's Avatar
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    Default New 2013 Duramax LML maintenance

    So I bought a new 2013 2500HD with the Duramax LML with z71 and 4wd with electronic transfer case. I've been searching a bunch of other diesel forums with no good results.

    Truck has 8k on it now and am going to do the engine oil and change the spin on external filter for the allison trans. I've read that some are suggesting drain the rear end fluid and replace with new at around 5-10k to get rid of the break in material which seems extreme to me. Also draining and replacing trans fluid at 5-10k as well which again seems extreme.

    Just curious what maintenance you other duramax owners suggest and have done with your rigs. Figured a lot of people on this forum would be more prone to preventive maintenance then just the bare minimum so i'd get some good solid advice here which I can't seem to find on the other forums.

    I'm still young and dumb and this is my first diesel and I would like it to last me a very long time as most people would.

    Thanks in advance.
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  3. #2
    mo balls than $cents$ IMPATIENT 1's Avatar
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    Id wait till 30k on diff and transfilter.i had my customers doin a drain fill on allison at 30k, pull drain plug new spinon with some dextron 6 fluid

    Dare to be different, if it turns out great you can claim you planned it that way.

    Jetboatperformance.com

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    Senior Member Skydog's Avatar
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    Nice truck man I have a built lmm, u can go much longer on the diffs are full syn :-) like 50,000. For trans I say around 30,000 and transfer case. And this is over kill in my eyes. And this is what I do for a living.
    Skydog

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    Senior Member jdekruyf's Avatar
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    Cool. Thanks for the info guys.

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    Senior Member jdekruyf's Avatar
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    Quote Originally Posted by Skydog View Post
    Nice truck man I have a built lmm, u can go much longer on the diffs are full syn :-) like 50,000. For trans I say around 30,000 and transfer case. And this is over kill in my eyes. And this is what I do for a living.
    Skydog
    The diffs come full syn from the factory right? I've been reading that people will drain them and refill after only 500 miles which seems like a waste of time and money to me.

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    Senior Member Skydog's Avatar
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    Quote Originally Posted by jdekruyf View Post
    The diffs come full syn from the factory right? I've been reading that people will drain them and refill after only 500 miles which seems like a waste of time and money to me.
    Yes huge waste of money! Trucks have very good difs in them!!!!!

  9. #7
    Senior Member jdekruyf's Avatar
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    Quote Originally Posted by Skydog View Post
    Quote Originally Posted by jdekruyf View Post
    The diffs come full syn from the factory right? I've been reading that people will drain them and refill after only 500 miles which seems like a waste of time and money to me.
    Yes huge waste of money! Trucks have very good difs in them!!!!!
    Should have said after the first 500 they drain and fill and them go like every 25k but that still seems like a waste haha. Thanks man

  10. #8
    Senior Member Skydog's Avatar
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    10 4 yea huge waste the difs are great!!! For sure not a problem area, these trucks came a long way from 03 better every year. You have a very very soild truck enjoy!! :-) :-)

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    Senior Member Skydog's Avatar
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    One thing i can tell you do not raise front end by the torsion bars!! If you want it higher get a lift kit!!
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  12. #10
    Senior Member jdekruyf's Avatar
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    Quote Originally Posted by Skydog View Post
    One thing i can tell you do not raise front end by the torsion bars!! If you want it higher get a lift kit!!
    What about using different keys? It'll stay stock for awhile though. This was my old truck and the stock is a nice change of pace haha.
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  13. #11
    Senior Member Skydog's Avatar
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    No buddy kills the front end, the geometry of the axles and tie rods get killed. Dont do it.... Need a kit with spindles to keep axles and tie rods flat. Not going up like a roof top lol

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    Senior Member Skydog's Avatar
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    I put a 4" kit on mine love it looks great and the ride and how shes pulls is as good as stock or better!! :-) :-)

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    Senior Member jdekruyf's Avatar
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    Quote Originally Posted by Skydog View Post
    No buddy kills the front end, the geometry of the axles and tie rods get killed. Dont do it.... Need a kit with spindles to keep axles and tie rods flat. Not going up like a roof top lol
    Quote Originally Posted by Skydog View Post
    I put a 4" kit on mine love it looks great and the ride and how shes pulls is as good as stock or better!! :-) :-)

    10-4. Thanks for the info. The though crosses through my mind to try and lower it and do something different but i don't think i could bring myself to ever do that haha. Thanks again.

  16. #14
    Senior Member Skydog's Avatar
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    Lol hahah be safe enjoy that monster!!! :-) :-) :-)

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