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  1. #1
    Site Sponsor Mr Zss's Avatar
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    Changing the hydraulic fluid?

    I have a 2016 380TH. The Level-up system has started making some popping noise on the front jacks. I have always followed the 7-day recommendation of cleaning the jacks and using a silicone spray. I'm thinking of adding some anti-stiction fluid.

    Here's my question ...
    Should I go ahead and replace the ATF in the reservoir at this time? The manual recommends replacing the fluid every 36 months. I've found that opinions on replacing hydraulic fluid are like replacing the brake fluid in your vehicle. Some swear by it while others will tell you its just a waste of time and money. I wasn't able to find much on the topic here and would like to hear from some GD owners.

    Thanks,
    Joe
    https://sites.google.com/site/jpelin...attredirects=0
    Joe Entrekin
    2016 Momentum 380TH
    2009 Silverado 3500HD Dully

  2. #2
    Paid my dues 😁 FT4NOW's Avatar
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    For the popping sound, search the forum for stiction and you will find some solutions.

    Sent from my SM-G950U using Tapatalk
    2023 Momentum 398M-R
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  3. #3
    Site Team Second Chance's Avatar
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    Per the LCI manual:

    Check fluid in reservoir every 12 months. If fluid is a clear red color, do not change. If fluid is milky, pink and murky and not clear red in color, drain reservoir and add new fluid. Hydraulic fluid in reservoir should be changed a minimum of every 5 years.

    Rob
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    2020 Solitude 310GK-R, MORryde IS, disc brakes,
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    (Previously in a Reflection 337RLS)
    Full time since 08/2015

  4. #4
    Site Sponsor SolarPoweredRV's Avatar
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    Quote Originally Posted by Mr Zss View Post
    I have a 2016 380TH. The Level-up system has started making some popping noise on the front jacks. I have always followed the 7-day recommendation of cleaning the jacks and using a silicone spray. I'm thinking of adding some anti-stiction fluid.

    Here's my question ...
    Should I go ahead and replace the ATF in the reservoir at this time? The manual recommends replacing the fluid every 36 months. I've found that opinions on replacing hydraulic fluid are like replacing the brake fluid in your vehicle. Some swear by it while others will tell you its just a waste of time and money. I wasn't able to find much on the topic here and would like to hear from some GD owners.

    Thanks,
    Joe
    I have read that adding the CAT brand of Hydraulic Oil Additive is the only way to fix the popping issue.

    The product is: 1U-9891: Hydraulic Oil Additive

    You simply remove enough Hydraulic Fluid from your reservoir and add the Cat Additive. I will be doing this as soon as I can remember to stop by my local Cat Dealer to purchase the product.
    David and Peggy
    2019 Ford F350 Lariat, 6.7L Diesel, Dually, Long Bed
    Running with 20k Reese Goosebox (Love It) and Ford Factory "Puck" system.
    Stopping with 8,000 lb Disc Brakes and Titan Hydraulic over Electric Brakes system.
    Powering all this fun with 1200 Watts of Solar, two Tesla, Model S, battery modules, 24 volt Victron Inverter.
    2018 Solitude 310 GK

  5. #5
    Long Hauler offtohavasu's Avatar
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    I have a buddy who works for CAT and he brought me some fluid. Worked great!
    Curtis, Christine, Cole, and Charlotte

    2007 Chevrolet Silverado Duramax LBZ, CCLB
    2020 Momentum 351M

  6. #6
    Rolling Along jjbbrewer's Avatar
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    From this Lippert document -
    https://lci-support-doc.s3.amazonaws...cd_0002091.pdf

    Introduction:
    If there is a popping noise in a Lippert Leveling system, Lippert has approved adding a quart of anti-stiction
    fluid. Approved fluids are listed by brand name and fluid characteristics below:
    • Torco RFF Grade 15 (Fig. 1)
    • Maxima Fork Oil Grade 15 (Fig. 2)
    • Caterpillar Hydraulic Oil Additive 1U-9891 (Fig. 3)
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