At a Walmart in St. Johns today and Castrol GTX is 15.50 and Valvoline is 15.00. Granted they are good conventional oil but when you can pay 21 bucks for Pennzoil Platinum what gives? Conventional oil will do the job but the advantages of PP over GTX and Valvoline in severe applications like extended drain intervals, better tbn retention and better cold flow properties make the conventional oil's look overpriced. MC5K 11.50 and Pennzoil 13.50 for 5 quarts looks like the better choices for conventional. I assume Castrol has to keep food of John Force's table and Valvoline has to do the same with their involvement in racing.