Kasey, One of the things i've noticed is exactly what Brad eluded to regarding ring seal. I've seen where it takes longer to seat the rings when i use break in oil. They always seat fine but it does seem to take longer. On a roller motor i don't use break in oil or additive of any kind. My opinion is that unless it's a flat tappet cam it's getting the oil that will be run in it full time. The flat tappet cams and lifters need the extra lubrication break in oil provides since the EPA has made oil companies cut back on the zinc and phospherous in the everyday oils.

Oh, by the way Kasey, Happy Birthday.