I want to start this off with this is the first diesel I have owned, it is a 95 F-250 4x4 I bought it from the original owner, fresh oil change 1000 miles ago, new batteries. I got off work last night and the pickup wouldn't start. Lights, heat, radio all worked but when I turned the key the engine wouldn't turn over. Got a ride from a friend back to the parking lot this morning and it starts up just fine, back and forth to around the farm all day no problem today. It was in the mid 30's when this happened and it is only getting colder, I live in north eastern Nebraska. Does anyone know what my issue may be or what might be causing this? Any help is appreciated thanks.