Just started thinking about it. For the longest time, Mobil 1 was the only bottle I knew of with a wide mouth (maybe Amsoil too?). It was also well known for its distinctive angular shape. Most quart bottles are still narrow mouthed, although some like Valvoline have an instantly recognizable shape. Some have gone to specific molds with the manufacturer's name, but others still use generic bottle shapes.
All 5 quart jugs have a wide mouth, but I'm wondering why there aren't more quart bottles with an easier pour. There are also some odd bottle shapes only for the sake of distinctiveness. Amsoil's is funky. Red Line has this bottle shape that makes it hard to pour because it doesn't vent well. They use the same basic shape for their fuel system cleaner. and it makes it near impossible to get all of it out at an angle where you can jam the bottle opening into a filler hole.
I'm old enough to remember oil cans, and the need for an oil spout that pierced the can. And of course the can needed to be pierced twice in order to vent.
All 5 quart jugs have a wide mouth, but I'm wondering why there aren't more quart bottles with an easier pour. There are also some odd bottle shapes only for the sake of distinctiveness. Amsoil's is funky. Red Line has this bottle shape that makes it hard to pour because it doesn't vent well. They use the same basic shape for their fuel system cleaner. and it makes it near impossible to get all of it out at an angle where you can jam the bottle opening into a filler hole.
I'm old enough to remember oil cans, and the need for an oil spout that pierced the can. And of course the can needed to be pierced twice in order to vent.