Originally Posted by Ninjaneer
This essentially will push your date out further so it's not something you'd use often, if at all, if I understand it correctly.
In the OP's case he got it done at another dealership so he reset it to keep track of when the next one should be. But in my case for example, I recently did a non-scheduled oil change and told them NOT to reset the pc, thus enabling me to get my scheduled one later for "free."
Sorry if what I'm saying is obvious :P
Did the same thing and the dealer did not reset the OD allowing for a free oil change later when indicated!