I'd change it every year and then not worry a thing about it. That's great oil and you're barely stressing it with 3k miles. Our Mercedes runs M1 0w40 and my understanding is that the service reminder could have it in there as much as 19k miles for up to two years. It got pretty close to two years before the light came on and I'd say I had about 5 or 6k miles on it. I'm just going to run it and change it when it tells me to do so, and I'm not going to even worry or think about it.