One thing I find surprising is the refusal of some Honda dealers to work on Acuras. I would expect that any Honda dealer would be willing to do an oil change on any car, especially an Acura, if the owner were willing to provide the oil filter. I would expect this to be even more true in markets in which there is no Acura dealer. But it isn't.
I'm about to go on a cross-country drive in which I am arranging an oil change on a '94 Acura Integra GS-R in a medium-sized city 60 miles from the nearest Acura dealer. I called the local Honda dealer to schedule the oil change, and they flat-out refused to do it on the Integra (this despite the fact that the Integra and Civic are even built on the same platform). They did refer me to a couple of independent mechanics who are happy to do the oil change. I'm not upset, I just find it surprising that they would turn down the business.