I have a new Sonata that has 2,500 miles on it.. We are heading out on a long trip this weekend (4,000 miles).. and I took it in to get the oil changed (not a dealer).. They told me that I should be "Good" with the breakin oil until 5 or 6 K miles... so change it when I get back.. I called the dealer and they said really makes no difference..??? . Any opinions on this? I am tempted to just get it changed to get the original oil along with any mfg particles out of the engine...