I found the car is Charleston, SC. The outside is a 9 out 10 and the inside is a 8 out of 10. Right now the car has just over a 172K. Everything is working well on the car. The car alarm goes off after about 60 mins if I lock the car from the drivers side, but there is no issue is I lock from the trunk.

So if I am understanding this correctly replacing the main and secondary filter is basically remove and replace. Except for having to fill up the secondary filter with clean diesel. Which sounds a bit tricky. Does the secondary filter need to be filled with clean diesel to work? Or will it start without?