Axle vents to prevent seal leakage?

[MFRED]

Ahhh, but they are different. If you look closely, the one for the rear has a 1/16th hole drilled in it, but the front one does not. If you put a hole in it the oil will seep out when you side-hill with that axle down hill. The hole needs to be in the center of the axle.

That's confusing, they have the same part number.

Maybe use one of those little picks & make a small puncture in the side of the cap to let air vent.
Keep a quart of 80w90 if some should happen to seep by or don't drive across a hill sideways that's steep enough to have oil run out the cap cause you probably shouldn't anyway and keep it out of water that's deep enough to go over the axle, once again, probably shouldn't go that deep any way.

 

[Wacky]

Seems you SHOULD be able to get a replacement plug, drill it out and put a fitting into it.
Run a hose from that fitting up however high you feel a need to.
As long as it is always above the other end of the axle you shouldn't get any oil loss.
A bit might go up the tube once in a while when it is downhill, you get it back on the opposite side slope - - unless you are posing a full time ploughing situation where the axle is tipped to the right for MANY HOURS (-:
Even then, you bring it back to the barn at night and stand it more or less level.

Small, cheap, easily replaceable part that you can work on at the bench - - seems a winner to me.

That is exactly what I was intending to do but there is a gentleman here that did that exact same thing and when he first used it, it filled the tube up to the filter and that was on level ground. I am just curious why don't they do something like this on these?

 

[Wacky]

You men the axle that is full of metal fragments already?

Did you know they drill out the filter adapter on a hydraulic transmission, and tap the what is it 1" hole, when people break off the filter?

And they drill out spark plugs from the heads of engines, and repair them?

You could drill next to one of the caps, so you could catch the catch the chips with some sort of device held in through the hole.

I have heard one of the ways they do this is to use grease to hold chips to the drill and taps. Even without doing so, flooding the axle with solvent like mineral spirits, or even light oil, would surely clean it out.

You are most likely correct, however, I am just trying to eliminate a problem from occurring down the road, if it is even preventable. I will probably just keep an eye on them for now and may even buy another cap to do some experimenting with. I don't feel comfortable drilling a hole in the axle just yet. Maybe down the road if I have the axle out. I do appreciate your help and ideas ray.
I see you have not had a problem yet and I hope I am as fortunate....but you already know the answer to that!