so i wanna change my oil and filter and i see all these adds on tv so what should i get for my stang i have a 94 mustang with 110,000 miles on it i dont drag or anything lol maybe sum fun racuing but i just dont knw if i shuld get oil that is for sludge protection or full synthetic royal puple or what ?? and shuld i get K&N filter ??? let me know and Thnaks