My bad, 5 quarts, not 5 gallons.

I bought the oil at Advance Auto, but Autozone had the same price. They're next to each other so I'm sure they try to be competitive.

Definitely not mistaking the synthetic or partial-synthetic with the regular dino oil.

I've even asked the different clerks over the past two years and they can't offer an explanation. The point I'm trying to make is that if I was comparing the dino with the synthetic, they would have been quick to point it out.
Funny how I get more info on this forum than from the guys who sell the stuff, not surprising though.

As an aside, I know it's been brought up a few times, but it's amazing how little the clerks in these stores no about the items they sell.