5w30 or 5w20, depends what is printed on the oil cap.
The 2005 Dodge Grand-Caravan has overhead valves (OHV).
5W20
Red, 5 year, HOAT type.
The 2010 Dodge Grand-Caravan has overhead valves (OHV).
The 2006 Dodge Grand-Caravan has overhead valves (OHV).
The 2009 Dodge Grand-Caravan has overhead valves (OHV).
The 2004 Dodge Grand-Caravan has overhead valves (OHV).
The 2003 Dodge Grand-Caravan has overhead valves (OHV).
The 2001 Dodge Grand-Caravan has overhead valves (OHV).
The 2008 Dodge Grand-Caravan has overhead valves (OHV).
The 2007 Dodge Grand-Caravan has overhead valves (OHV).
The 2002 Dodge Grand-Caravan has overhead valves (OHV).