I bought 4 gallons of their HD 5w40 ADO oil before I sold my 06 truck, I go and sell my truck yesterday and what do I see on my porch 4 gallons of backordered Amsoil oil, being I will be buying a 22 CTD soon can I use the 5w oil I have or do I really need 10w30 ADN as I would hate to have to try to sell what I have ad not all like that oil...