i have a 2011 tacoma 4.0 V6. just hit 4,000 miles, got a few freee oil changes by the dealer but id rather do it myself. was thnking of running synthetic oil, would like to run amsoil(for the recommended 5,000 mile oci), but i know theres many good syn. oils for cheaper. going to run the oem toyota filter, heard many good things about it. and that most of the aftermarket filters are shorter. so what would be a good syn. oil/filter combo for this engine? anyone with 4.0 tacomas on here? whats some of the better aftermarket filters out there?