Break in oils, zinc and all that jazz

You'll get a lot of different opinions on viscosity. But 10w-30 is usually a good, all-around rating. Diesel oils tend to have a little more zinc than passemger car oils, but they have gone down too. Especially from around 2007, because they have been getting catalytic converters and other emissions related hardware that zinc affects.

There are some "racing" oils that have a good bit of zinc. Some advertise it on the bottle. Personally, I use Amsoil and they have a wide variety of choices with published data.

http://www.amsoil.com/techservicesbulletin/motoroil/tsb mo-2007-08-08 flat tappet.pdf