I purchased an '08 CRV last August. It is still running the factory-fill oil. I have 7200kms (4500mi) on the odo. The on-board computer is telling me that the oil life is currently 50%. If that's the case, I could be looking at a 16000km oci. I'm feeling pretty uneasy about that. My 05 CRV's oci was 8000kms. Should I leave the oil in until the computer tells me to change it, or follow my gut and change it out at 8000kms?