I had a 20 and a 40 hour check up, where the volvo tech came and changed oil, filter and lubed things...he also sprayed and checked everything, including the electrical stuff....
There should be a list written down for you, stating what needs to be done, and at how many hours.... It should be by the engine manufacturer, not the dealer....
Hi. The manual from Mercruiser says only oil and filter. The work recommended is by the official engine representative in Singapore. His list is bigger. Interestingly he is pushing for the high priced option also!