Got the motor oil changed the other day at the dealership. $29 for filter, washer, and labor + $28 for a 5.1qt jug of motor oil from Walmart.
I always use Mobil 1 Extended Performance (EP). Every time right after the oil change the engine sounds so damn quiet it's not even funny. I thought it was a placebo kind of thing but it's not. I definately can tell a difference.
I also use Mobil 1 Extended Performance because some guys over at bobistheoilguy.com says the the EP stuff has more synthetic formula and heavier amount of detergents in it compared to the regular Mobil 1 because it's made to last 15,000 miles. So I just spend the extra $2 for the 5qt jug. I still change my oil every 3,750 miles though regardless just for peace of mind and warranty purposes. Motor oil always comes out looking "almost" as clean as the day it was put in. My engine must be spotless inside :rotfl:
By the way I'd like to add on previous cars I always used regular Mobil 1 and the engines always sounded a little ticky. With Mobil 1 EP the engine is quiet as my gf on the first date