Slow coolant loss

[sparky6911]

Hi all.

I was just wondering if anyone has any thoughts on where my coolant might be going.
It looses the full Max to Min quantity in about a month. I can't see any obvious area of build up but to be fair I haven't had the time to look that closely yet.

Are there any know weak spots, I have read about a flange on top of the gear box?

Thanks

David