I've always used corn oil as a cheap substitute for things like rice bran, and sometimes I recommend it to people who gawk at paying 28 dollars for natural glo. Natural Glo/Rice bran is probably better than lower grade linseed meal or vegetable oils, but I can't always afford it either so I understand why people probably use it all the time. It does make them shiny, and adds some weight but it can add energy if you go crazy or your horse is already high energy, where as the rice bran makes 'em shiny a little fatter than oil and doesn't add energy, so depends on the horse. I've never heard it prevents nutrients, but would be curious where you read that and what nutrients it prevents. It seems like there is a bit of a war on high fructose corn syrup so could this be propaganda steaming from that? High fructose corn syrup is really processed where I don't think they do that much to the oil, but I'm no expert, someone was just telling me that it's that they break down the natural sugars which are complex into single sugars that give us those highs and lows and metabolism problems. But I don't know what they do to the oil, so I can't say. From experience I haven't had a problem with it.
Troubled TB ~"A thorn by any other name will prick just as deep." @-'--,---