amazed at the thin oil you guys use over there in the states... I know the weather is a lot colder than here in Aus... but a 30 weight oil seems excessively thin and just causes more unnecessary wear.

Most people run 15w40 semi synthetic or 5w50 mobil1 here. My performance shop even goes up to 10w70 (although i think thats a bit too thick lol)

Ive been using mobil1 5w50 and oil pressure is spot on 55psi at idle and around 60 with revs