Wow...we have identical motors :)
I ran Castrol GTX 10-30 the first 5 hours of life and then ran a quality 10-30 synthetic ever since. My compression/UOA's are stellar. I did not "baby it" at all the first 5 hours by the way. Quality synthetics would be Amsoil/Pennzoil Platinum or Shaeffers. It is as important to use a quality filter. No Fram for sure. Amsoil/WIX/NAPA are top shelf. Be damn sure you have a sealed cold air intake. Amsoil or AEM dry filters are the best. K&N doesnt filter for shit.

