I run 10 30 mobile full syn in the warm months, 5 30 in the cold ones, with a mobil1 filter. I swear by mobil1 full synthetic, Ive been about half a million miles with it (multiple vehicles).
Any of the higer quality filters should perform fine, although the 15k interval is equivilent to the 5k conventional. Just make sure your oil level doesnt drop, synhetic disappears more than it breaks down.
If youre just switching to synthetic check your oil every time you get gas for a month or so, sometimes the motor will shock and use a quart or so on the first LOF.
“Coming of age in a fascist police state will not be a barrel of fun for anybody, much less for people like me, who are not inclined to suffer Nazis gladly and feel only contempt for the cowardly flag-suckers who would gladly give up their outdated freedom to live for the mess of pottage they have been conned into believing will be freedom from fear.”