For oil I use Delo400 from Wal-mart. It's inexpensive, but great oil. It's made for diesel engines which have to have oil cleaner than gasoline. I've used this for almost a year now and before that was Castol GTX. The Delo400 looks much better after 3 months of same driving as the Castrol was.
FYI: I use Wix filters from O'Rilley's Auto thanks to this site's info. Never buying a Fram again
http://www.frankhunt.com/FRANK/corve...lterstudy.html