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I want to go to synthetics now...

Discussion in 'Maintenance & Fuels' started by Ozzie, May 19, 2008.

  1. Ozzie

    Ozzie Snow looming...run!! Moderator

    2,866
    20
    Feb 10, 2008
    Apple Valley, Minnesota
    My truck now has 14k on it and towing season for the RV is firing up.

    I want to do both diff's and transfer case for now. I think it's too early to do the tranny (did the filter).

    Can someone please tell me what are the best synthetics to use and quantities I want to buy?
    Also, can these systems be flushed out to remove the new truck shavings?
     
  2. addicted

    addicted To Him

    70
    0
    May 9, 2008
    Indiana
    I use Amsoils Severe Gear 75w90 in the front dif and 75w110 in the rear. There is no need to flush it, just let it drain.

    2 quarts in the front and 4 quarts in the rear.
     
  3. tomrex

    tomrex Professional Idiot

    I use Mobil One synthetic in the differentials. I don't like it any more or less than Amsoil, but it's at the parts store and Amsoil isn't. :)
     
  4. Ozzie

    Ozzie Snow looming...run!! Moderator

    2,866
    20
    Feb 10, 2008
    Apple Valley, Minnesota
    Ahh...I was trying to keep an open mind, but would prefer to get it at the store too...
     
  5. truckie481

    truckie481 Dagum

    682
    0
    May 4, 2008
    Cleveland, NY
    I agree that more places carry Mobil1 but even out in the middle of nowhere, where I live there are three places that deal Amsoil.
     
  6. Chromer

    Chromer Ain't no Recruit

    56
    0
    May 10, 2008
    Northern Illinois
    Agreed with above... Mobil 1 is good stuff, and the gear oil is available everywhere.

    Now, the Delvac 1 engine oil, thats a little harder to find
     
  7. stacks04

    stacks04 McLovin

    3,579
    0
    May 9, 2008
    terryville ct
    i use the gm stuff in the diffs, just cause i get it free. if not amsoil or mobil 1 for me. i use the delvac 1 oil from mobil also. real nice stuff.
     
  8. The Killing Road

    The Killing Road Banned

    597
    0
    May 10, 2008
    MS
    Mobile 1 in the diffs trans and tcase for me....Shell Rotella T Synthetic in the engine... I ran AMSOIL before, and if I had it to do over again, there's no way I would again....
     
  9. Heartbeat Hauler

    Heartbeat Hauler A(ACLU) Agent Yoda

    2,079
    0
    May 4, 2008
    Morgantown, WV
    If you like the Amsoil, it probably has a purty good shelf life, so you could order enough for two changes, then you would always have it with you (as you use the second batch, order again). I see you are an RVer so toting a few gallons of gear oil is not ideal, but at 30K changes you'll probably not be away from home that long.

    I'm not sure where the thread was, but Mike L. sort of gave his opinion on the different syn gear oils and he was feeling purty good about several different ones. I'll try to find that thread.
    JP
     
  10. Ozzie

    Ozzie Snow looming...run!! Moderator

    2,866
    20
    Feb 10, 2008
    Apple Valley, Minnesota
    I've never tried Amsoil, and I have been looking for recommendations for both diff's and the transfer. From what I've been reading, several still like the GM stuff too.
    The transfer sounds like it should be ATF? Are different weights recommended for front and rear diff's?

    I would appreciate any info on this as I haven't been through it before.

    ...nice avatar Heartbeat Hauler...like that one a lot...:thumbsup:
     
  11. Heartbeat Hauler

    Heartbeat Hauler A(ACLU) Agent Yoda

    2,079
    0
    May 4, 2008
    Morgantown, WV
    I found that thread I was talking about, umm, but it's on a different forum. I am posting the thread location, hope I'm not breaking any rules, purely informational only.

    Preface: Oz, Mike L has a great rep for trans work and also being very inovative when comes to making the Allison bullet proof. I would trust anything he says....unless the conversation turns to sheep....):h

    Anyways, scroll down to post #5, that's where he starts. http://www.duramaxdiesels.com/forum/showthread.php?t=3056

    Oh, and thanks. I looked long and hard for an avatar that would convey how I felt about things, and this one does the job....:patriot:
    JP
     
    Last edited: May 22, 2008
  12. 12ga diesel

    12ga diesel Jack of all, Master of none

    1,766
    28
    May 4, 2008
    McHenry,IL
    Same here, with Mobil Delvac 1 in the engine.
    I hadn't been able tofind it until recently at Farm & Fleet. Not of the auto parts stores around me have had it. Just Delvac 1300. I'm sure now that F&F are carrying it, more places will have it soon.
     
  13. Ozzie

    Ozzie Snow looming...run!! Moderator

    2,866
    20
    Feb 10, 2008
    Apple Valley, Minnesota
    Thanks for that link Heartbeat Hauler...I read it with interest...kind would like it if he would consider visiting us over here...;)

    We aren't hot on the trail of links to other places...maybe at some point it might be an issue, as in with vendors and such, but we're definitely trying to be more open about things here.
     
  14. Heartbeat Hauler

    Heartbeat Hauler A(ACLU) Agent Yoda

    2,079
    0
    May 4, 2008
    Morgantown, WV
    No problem. He has some good info, I hope it helped. Also, an invite might go a long way, especially from one of the "Big Dogs"....:thumbsup:

    Cool. I didn't want to muddy the waters early in the game. I appreciate the openess. I do understand bidness is bidness, but it is also about helping one another.
    JP
     
  15. Chromer

    Chromer Ain't no Recruit

    56
    0
    May 10, 2008
    Northern Illinois
    Actually, Farm & fleet is where I buy it too. They had it back in November when I bought my truck, and there's still no one else carrying it.

    I'm not holding my breath. Just gotta make a trip to Montgomery twice a year...
     
  16. btfarm

    btfarm 300,000 Worth Staff Member Moderator

    16,098
    1,382
    May 12, 2008
    Sandwich, Illinois
    It would be great to have Mike L here frequently. I know he's a member. That guy is a true Allison and drivetrain guru!
     
  17. SfcJones

    SfcJones A(ACLU) SGT. SLAUGHTER

    3,504
    12
    May 3, 2008
    South Ga.
    I use Amsoil everywhere in my truck, tranny included....
     
  18. Ozzie

    Ozzie Snow looming...run!! Moderator

    2,866
    20
    Feb 10, 2008
    Apple Valley, Minnesota
    Sounds like Mobile 1 this time around...curious to see if there is any reduction in friction.
     
  19. busdriver75

    busdriver75 Busier than hell...

    1,258
    0
    May 7, 2008
    NW Ohio
    i'm switching to all synthetics at 100K. well, everything put the engine oil.
     
  20. Ragindiesel

    Ragindiesel New Member

    258
    0
    May 9, 2008
    Amsoil at Dealer cost for all DTR members. if your thinking of making the switch to synthetics and wanna go the amsoil Route Please keep us in mind.
     

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