many people like FRAM. I like FRAM because they have this nice grip on the bottom. Me..... I take very good care of my car... always want to use high quality. I use Mobile 1 (3qt) and 1 qt for locus super synthetic with mobile1 oil filters....
by the way mobile1 oil filters are quite expensive... $11. when other brands are $5-
I use mobile1 or Toyota Genuine filters.
I check my oil once a week... change them whenever I think they're getting dirty.... I know a lot of ppl think it's waste of money for doing oil changes about 2500miles... but hey, cleaner... the better gas mileages.