Hello For lack of time I have driven my motorcycle (SV650 EZ11/99) since the last oil change a year ago only about 1000 km. In the instructions is oil change of all 12months/6000km. Now I wonder if I change or not, because it is according to time interval but according to km interval is still almost new. Does any of you know why the oil should be changed after a certain time? Does it also age in the stand? If I buy new oil somewhere, I also do not know if it is not possible there with other vehicles is often only one km interval. Does this have an important background with the time interval or is it perhaps just a kind of assurance that the driver (at least once a year) controls the oil level? Or is it rip-off? What do you mean? Greetings and a great start to the season!!!