Pennzoil Ultra Platinum 5W-30 Full Synthetic Motor Oil 5-Quart $20.97
Cheapest price in a while without requiring a rebate. I've been using this Pennzoil Ultra for over a year now and I can say it's a great oil that is on par with Amsoil which is $13 per quart. I used to run Amsoil 5w-30, Eneos 0w-50
, and all those other small boutique oils and I would say this oil is 90% as good as those without breaking the bank.