Mobil1 and Royal Purple use the same base stock for there oil.Here its $15 for an oil change and a top off on all other fluids. I pay around $45-$50 and do it myself. I use Mobil1 Full synthetic. May be switching to Royal Purple. Ive seen some HP and Torque tests where the Royal Purple gets about 10 more on average over Mobil1.
11 dollars diff from what you pay is "ripping you a new one"?40 bucks good god they are ripping you a new one.... i take mine to ford to get it changed $29 it would cost me around $25 to do it so i figure hell 4 dollars they can get the oily hands