Advance Auto Parts
5 quarts Castrol Edge synthetic oil + Purolator PureOne oil filter for $24.99
Castrol currently has a $15 rebate on Castrol Edge oil
http://www.castrol.com/liveass...e.pdf
Advance Auto has $10 off $25 if you enter in the below
http://advancegrandopenings.com/
Castrol Edge is a level IV based synthetic, this is better than Mobil 1 and regular Castrol Syntec since they are level III.
Edge is marketed at 15k mile intervals (now granted I don't believe anyone here will go 15k before an oil change, but I believe 7500 can be done with no issues)
Total Cost: Only Tax, if you fill out the rebate and print the coupon and it's accepted, you pay pretty much $0