I was called this evening by Nissan Canada to tell me I should put my car in for its first service in mid April. On my versa it says first service at 6000kms. I won't even be CLOSE to 6000km in mid April. I'll probably be at 2000km (I am traveling a lot and not driving the car as much as I would like right now). Do I have to put it in when they say date wise or when then say mileage wise? If I put it in late (say May 15th) will I get dinged on the warranty?