Hi I'm a current Mercruiser owner, but I'm looking at a 1985-ish vintage boat which has a 350 V8 coupled to a Volvo 280. It's a fresh water boat. I have never owned, or maintained a Volvo before, and I've read some quite positive things on the net about them. Is an older model drive like the 280 still considered a good bet, or do they have known issues? Are they easy to maintain, and parts still available (even if sourced from overseas)? Do they require any extraordinary maintenance or is an annual lube normally all that's required? As far as things to look for in a pre purchase, aside from checking the gear oil what other things should I look for or test? Many thanks