I don't post too often because you guys know way more than I do. But I love reading this board. Anyway, several questions: Does the German Castrol that everyone is whipped up about, only come in 0W-30? And if so, would I be able to use it in my '03 Accord with the 5W-20 specified? I look for it in all the auto places I go, but no luck so far. I live in the Baltimore area. Even if I did find it, should I use it?