Thanks for the replies. Picked my car up this morning. No luck on getting a new PTU. Appears my issue was a leaking RH half-shaft seal. Not 100% sure if they replaced the fluid or just topped off. No more smell (so far) which is good. Also confirmed I have 100,000 mile powertrain and not the 60,000. So, not as worried as I was before and if another seal fails or worse, the PTU, I have some headroom. Could just be all in my head, but so far car seems smoother.
Kevin