Oil recommendation?

[Slaninar]

According to the maintenance manual which I think is downloadable from here the interval is 6000km which I think is about 4000 miles. That works out at about 3 or 4 months usage for me during the spring and summer, a bit longer during the autumn and winter. Mind you most of it is trogging up and down the motorway to work so not exactly high stress mileage. Personally I always change the oil and filter together. A filter is only a fiver so why scrimp.

Use fully synthetic oil and change at 10,000 km (6000 mile) intervals, especially since you ride like you said you do. Just make sure you use a new oil filter each time.