Service plan V70

I have been driving a 97 V70 / 106kW for 4 years with the greatest satisfaction, without having had a single fault so far. In order to be able to ensure this condition myself in the future, I am looking for an exact service plan for this model. In the Volvo customer service checkbook the deadlines are not exactly listed (“… among other things the following works…” or “change fuel filters; the interval depends on the respective model…”.