I'm pretty anal about changing my oil, I always use mobil 1 oil and either a purlator or mobile 1 filter. Auto store is having a special right now on 5 quarts valvoline fully synthetic and a K&N oil filter for $26. The filter alone is $14 and the oil is over $7 a quart so $26 is an outstanding deal. I'm not worried about the oil I'm sure valvoline synthetic is a good oil (right?) but I'm a little sceptical about the K&N filter, Considering how crappy a job there intakes do at filtering.....what's the consensus on the K&N oil filter? Is it worth it or should I spend the extra money to get mobil 1 and a purlator? Thanks for the input guys!