1. Thank you for visiting HeavyEquipmentForums.com! Our objective is to provide industry professionals a place to gather to exchange questions, answers and ideas. We welcome you to register using the "Register" icon at the top of the page. We'd appreciate any help you can offer in spreading the word of our new site. The more members that join, the bigger resource for all to enjoy. Thank you!
  2. ALL NEW MEMBERS READ THIS FIRST!! Thank you for joining Heavy Equipment Forums! If you are new to forums we communicate with "Threads", please search our threads to see if your topic may have already been answered and if not then click "Post New Thread" in the appropriate forum. This will allow all of our members to see your question and give you the best chance to be answered. After you've made a number of posts you will graduate to Full Member status where you'll see a few more privileges. Following these guidelines will help make this the best resource for heavy equipment on the net. Thanks for joining us and I hope you enjoy your stay!!

Final Drive Oil

Discussion in 'Track Loaders' started by frickenbored, Jun 26, 2021.

  1. frickenbored

    frickenbored Well-Known Member

    Joined:
    May 18, 2019
    Messages:
    116
    Location:
    Michigan
    Hey guys, so my Case 350 loader is still running thankfully. After some upgrades and using it for a ton of work I noticed that one of the final drive units has a very small leak. After looking into what's involved with changing the bad seal I decided that the leak is small enough not to worry about yet since I have other things that are more important (replacing most of the hydraulic hoses and replacing the seals in the track adjusters). But this got me thinking, and I'm pretty sure that the oil in the final drives has never been changed...at least not in the last 25 years.

    So I looked in my Case 350 service manual and it says to use SAE 90 GL4 fluid. I headed over to tractor supply and bought a 2 gallon jug of SAE 90 gear oil. Well once I got it home I actually read the label and found out that its SAE 90 GL1 fluid for Ford tractors between 1939 and 1952 so I'm guessing this is no good. After a quick search online I wasn't able to find any SAE 90 GL4 oil. My question is can I just use a modern 80w-90 or 75w-90 gear oil in these final drives? From what I can tell in both the service manual and parts book its just a couple of gears in the final drives, I would think any gear oil is probably good enough. Any help would be appreciated!
     
  2. Cat977

    Cat977 Senior Member

    Joined:
    Feb 19, 2006
    Messages:
    440
    Occupation:
    Machinist/Millwright
    Location:
    Madison WI
    I just Love, "I would think any gear oil is probably good enough" reminds me of a First Date. You can't fix that first impression. Like one of my old Bosses after the years of using the wrong oil in these 750 H.P. gear boxes. "I can't see why there's a problem". Guess he should of looked at the plates, the fancy, shinny ones drive riveted right to the case. One told you what oil to use. Lazy and Costly. Ended up buying 3 new ones! GL1 is the lowest level of performance and is only used in vintage transmissions. GL4 is the first serious level of EP performance and is specified for many gearboxes and final drives from mid 1930's onwards. You can pick a different one but make sure to do your home work.
     
    Last edited: Jun 26, 2021
  3. frickenbored

    frickenbored Well-Known Member

    Joined:
    May 18, 2019
    Messages:
    116
    Location:
    Michigan
    Screenshot_20210626-212944_Gallery.jpg
     
    Ben House likes this.
  4. GaryHoff

    GaryHoff Senior Member

    Joined:
    Feb 25, 2009
    Messages:
    808
    Occupation:
    Heavey Equipment Mechanic
    Location:
    Alberta, Canada
    75w90 gear oil is too light for most final drives, and will be burnt in a short period.

    The manual I have calls for Case FDL fluid for the final drives.
    Early sn range call for 90W as a secondary option
    Later sn range call for 85W-140 as a secondary option

    I have used 80w90 in most final drives, and have not had any issues.
    Any quality brand of 80w90 is GL4 rated, (shell spirax for example)
    IMHO you would be fine to use 80w90.
    85w-140 would be suitable for extreme conditions and hot temperatures.

    When I worked at a Case dealer, there was a cross reference chart for obsolete oils. They may be able to provide you a firm answer if you are still concerned.
     
    Nige, Cat977, mg2361 and 1 other person like this.
  5. frickenbored

    frickenbored Well-Known Member

    Joined:
    May 18, 2019
    Messages:
    116
    Location:
    Michigan
    Thank you for the helpful reply!

    So after some more searching I think I found what I need:
    Screenshot_20210627-004450.jpg

    Sadly it's from Walmart but I guess I'll have to overlook that this time.
     
    Cat977 likes this.
  6. Cat977

    Cat977 Senior Member

    Joined:
    Feb 19, 2006
    Messages:
    440
    Occupation:
    Machinist/Millwright
    Location:
    Madison WI
    frickenbored Sorry I can be a real Turd Sometimes. Anyhow somebody on here found a good price for the engine oil I use. It was $10 something back then. About the same I paid for 5 gallon buckets. Probably not the most eco friendly way to buy it, but surely a lot easier to handle.
    Mobil Delvac 1300 Super Heavy Duty Synthetic Blend Diesel Engine Oil 15W-40, 1 gal for $11.87 at Wallmart.
     
    Last edited: Jun 27, 2021
    frickenbored likes this.
  7. frickenbored

    frickenbored Well-Known Member

    Joined:
    May 18, 2019
    Messages:
    116
    Location:
    Michigan
    lol don't sweat it I was just joking around...thats definitely cheaper than the Rotella I've been using.
     
    Cat977 likes this.