This diff oil issue is a PIA.

Probably because few Hondas utilise a hypoid drive.

My second diff has become noisy and I am wondering if Honda has put MTF into it again...

 

ok so here are the resuts:

changed diff oil to amsiol 75w110 severe gear oil:
the results are that when hot hot (1st day test drive today) the noise is totally gone, so i can only assume the stuff that was put fresh in by honda was not up to the job when it got hot

changed gear box oil to amsoil manual STF:
seems a little slicker

changed engine oil to mobil 1 (purely because i had some to use!):
engine is a lot quieter in comparison with the shell helix the dealership put in

so overall some decent fluids seemed to have helped no end, very happy...
that was until i went to examine the car and found they had put some chip marks on the edge of my door one of my pet hates, so having taken some photos before and showing someone before leaving i shall be presenting a bill to sort that out i imagine!!!

 

Drop them an e-mail.

You can search on here to find that I had this happen at crown. Total accident and they sorted it immediately and gave me a free bottle of touch up paint for my troubles.

100% Crown Honda in Bushey are by far the best garage I have used