For those interested, Autozone has a deal that you can buy Mobil 1 0w-40 for about $6 a quart, I think there was a maximum of 4 or 5 quarts in that deal. But you must also get the free Mobil 1 oil filter, and my store does not carry the E46 oil filter (not sure if it is not made for E46) but I just took any filter since it is free. Do not remember when the expiration date for this deal is--sometime in February. I do not know how much you guys pay for Mobil 1 0w-40, but I normally need to pay about $8 qt.