Dezert you lucky prick, mine was the same and I could still drive it however I didnt think it was going to last too bloody long, I had EXACTLY the same happen, bluish smoke at anything over 4K etc, but WHEN mine blew initially, I stopped and opened bonnet the disptick had blown out of the tube, there was oil fu(king everywhere, there appeared to be a crack in a manifold somewhere as there was an enormous "shhhhhhhhhhhhh" noise that increased in volume with rev's, there was a rubber pipe split form a sensor, don't know which sensor though, driver side and basically small black boc couple of inches all round on the firewall...drove for two days afterwards, from Penrith into the city and back then Penrith to Kurrajong and it BARELY made it, so pulled it apart and ready to do something about it now :-)