There isn't anything that's available locally that shows those specs. Moving from antique gas burners to modern diesel is definitely a learning or in this case, non-learning experience. The gasket did not come out in pieces. If it isn't hard as a rock I'd leave it be. The comment about the copper seal washer on the thru bolt is a good thing to watch. I guess I will have to find those specs.
Why would you not use it? It appears to be at least 20w. Mahindra can't make up their minds on front axle lube. I put 75W90 synthetic gear lube in my front axle because gear lube is specifically made for gear boxes and differentials. There are 24 pieces in this gasket and O-ring kit. I've had a late model 140 for about 5 years, and an Operating Manual for only a few months. .
I have a 1953 Farmall Cub that my grandfather bought new and I got it when he passed away. The 3 point didn't like it until I changed back to 30w. For 330, 340, 460, 504, 544, 560, 606, 656, 660, 706, 756, 766, 806, 826, 856, 1026, 1066, 1206, 1256, 1456, 1466, 1468, 1566, 1586, 2504, 2544, 2606, 2656, 2706, 2756, 2826, 2856, 21026, 21256, 21456, Hydro 100. If it isn't hard as a rock I'd leave it be. Problem is, nobody here carries it. They might have it on the jugs, but not on the online specs. My manual states the same as yours.
Viscocity was a 10wt also. Copyright © 1997-2019 Yesterday's Tractor Co. Upon putting the tractor back together I added hydraulic fluid and nothing. Specs for the axle aren't confusing. For your tranny you could use this stuff or I think this stuff. I also added a bit of Redline Shockproof, a bit less than a quart.
Travis I was just looking at the specs for Hy-Tran equivilants and it seems it is 10W. I replaced the ring in my 450 shortly after I got it and that was about 1990, doesn't leak a drop. This is a cast aluminum style and will not directly replace cast iron style it will replace if you have a plate manufactured to adapt the type of hose connections as is on your old pump. If you like antique engines, vintage tractors or old iron, please register and join us. The fluids listed in the manual are for all parts of the world and they are available elsewhere.
Some noise squeal may be noticed due to the air. And yes I have changed the filter many times since then. I think my transmission and rear axle housing probably have 80w90 gear oil, or something similar, in them now. Spirax has replaced it, but there are several varieties. This whole lube thing is not rocket science, yes there probably is something misprinted there and it should be corrected and probably will someday but your manual and mine are not right so we just have to live with it.
If you don't have the answer sometimes the best thing is to start from scratch. Then put it back on the valve body. From looking out and about it seems hytran is 10W and hytran ultra is 20W. Are you talking about oil for the front axle or the hydraulic fluid for the tranny and such? Problem is, nobody here carries it. The kit includes: 1 - Gasket 350708R2 sub for 350708R1 , 1 - Quad ring G46055 sub for 353186R1 , 2 - O-rings 511029 sub for 355965R1 , 2 - O-rings 86553262 sub for 253070R1 , 1 - Oil seal 385038R91 sub for 353183R91 , 1 - Woodruff key 126-109 sub for 106749 , 1 - Jam nut 124925 sub for 114494. That's why a new gasket is included in the box with the filter. Some noise squeal may be noticed due to the air.
Use absorbent rags or a container to catch any hydraulic fluid that leaks out when removing the fittings. Like I said, every new oil filter comes with a new gasket right in the box. Hytran is a 10wt oil. I would imagine that to avoid confusion, they also switched the recommended lubricant for the rear end of the 140 from gear oil to HyTran. If it isn't hard as a rock I'd leave it be.