Rear differential fluid change on 2007 Acura MDX

My dealer is telling me that the rear differential fluid should be changed every 15,000 miles. Is this accurate? And if so, what are the potential problems if I decide to do it about every 30,000 miles instead?

Asked by for the 2007 Acura MDX
For the rear differential Acura call for Acura/Honda ATF Z1 fluid for the rear differential, and same for the transmission. Acura state in normal service conditions change the differential fluid at 15, 000 miles and then 30,000 miles and every 30k after that.
3 more answers
Please answer my question about how often differential oil should be changed
The MDX has had a lot of problems with their tranaxles and differentials. I would change the fluid at LEAST every 15k and use the highest grade synthetic fluid. You can go to a good independent shop so you won't get raped by the dealer. If you risk doing it every 30k be prepared to pay a big $$$money for a new differential every other year or so.
where are the spark plugs located on the 05 mdx?