Is anyone running a 4.7L???

When I worked at the transmission shop, we had a Jasper rep that would stop in like once a quarter trying to get us to use them. We got on the subject of the 4.7 one day. According to what he said, the oil pickup in them is too small. It allows the oil to overheat and break down and sludge up if you do not stay RIGHT on top of oil changes. At least that's what he said.