what type of oil to use in a 225?

Even Rotella T and the other diesel oils have now started running reduced levels of zinc. Best to use an additive or the oils specifically made with increased levels of zinc. Better safe than sorry. Once Fram got bought out, the price and quality of their filters went downhill. As it was said in a previous post, Wix, Napa Gold, K&N and Purolator are the way to go.