frickenbored
Well-Known Member
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!
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!