Damm bro, your degree in economics failed you if you think 1100 miles is 5000 km lol. More like 3100 miles. Also, the oil in there is now 1 year old and will be 17 months old before it gets changed in the spring. According to oil manufacturers that produce high quality oil like for example Amsoil signature series, they say as an "example" 20,000 miles or 1 year whichever comes first. In my case, it's the 1 year.