I use 5-30 in the winter, and currently have 15-40 Shell Rotella in there. That's coming out next week and Castrol 5-30 going in may be 10-30. I have been using Fram filters for most of my 133,600 miles.
Main thing I found is change the oil on a regular basis. Hammerdown on here uses Amsoil and swears by it, he has 154,000 miles. and goes with 17,000 mile OCI.