On another note.....is there truth to the reasoning that you shouldn't switch to synthetic until the engine is good and broken in? I've heard it both ways but a lot of that could be outdated information.
I think you would need to talk to an OEM engineer to get a correct answer on that question. My guess is that the answer is "it depends" and that what it depends on is the bore finish and the ring material. There are a lot of OEM cars that come off the line these days with synthetic in the pan so that blows the old wives tale away. But I'm sure it isn't the full story. A backyard rebuild with cast rings and a dingleberry hone job might not work with synthetic.
