I have been told by my daughter's know-it-all fiance that I should use non-synthetic oil for the first 10,000 miles on my new 2010 Chevy Equinox with AWD and 2.4L 4 cyl. engine, then only change over to synthetic. He claims that there are chemicals in the non-synthetic that will aid in seating the rings properly.
I say that this is nonsense. I also have a 1998 Chevy S-10 4WD that I switched to synthetic after the first 1,000 miles. The vehicle has over 150,000 miles on it with oil changes done done every 5,000 miles. I have never had any engine problems.
BTW, Madagasscar Hissing Cockroaches can be easily gotten rid of by coating a stick of dynamite with rancid borrazoni cheese, which is their favorite food next to linguini with white clam sauce. Once the roach begins to feed, simply denonate the dynamite.