I am running Mobil1 and I added a bottle of LSD additive. It won't hurt to put it in, it can hurt if neded and not used and there seemed to be differing opinions on weather or not it was needed with synthetics. It is cheap insurance...somewhere around $5 for a bottle/tube (whatever it came in).
It is a fairly easy job (probably a 2 out of 10). I found my drain hole on the front to be clogged. Also found that a cheap fluid pump helps to make it easier but is not needed. Good luck!