Boxed oil? no problem here... Havoline, Super Tech, Valvoline, and even Mobil 1. In general I've found the boxed oil is much much cheaper for the quantity that you're paying for, quarts are ridiculously overpriced as it is. I calculated M1 as an example but for the price per quart you are saving $8 by choosing the box instead of the 5 qt jug, the jugs comes to $5.59 qt, the box is $4.92 which is .67 cents savings and multiple that by 12 and it's $8.04 saved from purchasing the box vs the jug, tax excluded of course. 2 jugs of the M1 is almost as expensive as their boxed oil so you're only paying a tiny but extra but also getting 2 more qts.
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