10W30 Unless it is a high mileage engine, use whatever your owners manual says.
Around the oil filter location
10-30
conventional 10w30
10w3010w30
I use 5-W30 in my 1990, and since the 1993 is almost as old, I would recommend the same oil weight.
10w30 weight.
its 5 quarts for about any engine. 4.5 quarts for the 3 liter v6
10w30
5 wt.
10w30
If it is the same as my 1991 Lebaron it is located just above the oil filter. You will have to take the oil filter off and the starter off to get to it.
I have always found that 20w50, the heavy weight oil, works best in older vehicles.