every oil change if done properly, doesn't matter what brand oil or filter (provided u use the manufacturers recommendation), makes the engine run smoother. Brand choice is users preference. In saying that i will use penrite 10W40 plus 10 semi-syn on next oil change. Currently use 10W40 Mobil semi-syn Well it sorta matters what oil you use. For example it's probably not advisable to put something like Castrol GTX into a 2ZZ. I'm using the short Ryco filter with Motul 4100 Turbolight (10w-40).