Toiyabe
Adventurer
Awesome build! What brand LED light bar is that? You seem to have a sweet shop to work in also, I'm jealous!
I believe the stock breather is one way valve only. Lets air out but does not let air in. So if your rear diff is hot and you soak it in cold water during stream crossing you have the potential so get water sucked in through your axle seals on both ends of your axles.
In my 4runner I had a one way breather in the rear diff like you. But Toyota put a 2 way breather for the front diff. Why? I'm not sure. So I put in the same 2 way breather from the front diff to the rear diff and put it as high of a location that I can find.
I sold the shop I used to own and "retired". Part of that was building a new shop. I still have to make some benches, but it's really nice.
I reused the old diff breather at the top of the hose zip-tied to the filler, so it is still there. It seems to work well. Good to know about the front breather. Odd. I'll probably remove it and put in a fuel filter.
The LED lightbar is a cheap eBay one, sold my someone in the US if I have a problem.
The only LED bars I have experience with are the super high-end ones and the cheapie eBay ones.
When it's my money, I take the risk with the cheap ones.
This is a 36" 72 3W LED set-up.
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