One of my friends that helps do the OCI's in our charity work received a 5 qt.container of Castrol Edge 0W40 oil from a parishioner in his church. He donated it to us for the OCI's we do for the less fortunate. There is an elderly man at the other complex we do oil changes at, that owns a 96 T-Bird with the 3.8 V6. He is on the list to have his oil changed this week and we were thinking about using the Castrol Edge in his engine. Opinions?