It doesn't really matter. Any oil will do. They only produce different types to make you buy one of each for which way the moon's facing, so you'll have 4 nearly-full bottles sitting in your garage and they'll make more money. Just get one, and use that all the time till it runs out, then get another one, possibly the same possibly different, it doesn't matter.
then if you've used more than one and you notice the difference, then you'll know