Your thoughts please. When changing the front diff fluid I noticed a couple of drips on the bottom of the diff. When I went to remove the fill plug it was loose I could turn it with my fingers. Fluid changed, drain and fill plugs properly tightened. Checked the diff again a small drip plus the diff case was quick warm plus I could see the threads on the plugs were wet. My question is would a blocked breather cause my symptoms?

Possibly, as it would pressurise. Also may be that it has been over tightened or cross threaded in the past and has damaged the threads. Tony
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I put in 0.75Ltr. I was going to put some Teflon tape on the threads but didn't bother??

Hello all, a couple of turns of PTF/Teflon tape around the threads of the fill plug.