15mm
You can, or a wrench.You can, or a wrench.
13mm
Using a suitable 15mm wrench turn the drain plug counterclockwise.
If you have the original factory tank, it has a drain plug (bottom center) you can remove with a wrench.
A wrench
The size wrench to remove it should be 15mm.
15mm.
14mm
11/16th
It seems to me I use a 15 mm wrench to remove the engine oil drain plug.
Use a proper size box-end wrench or socket to remove the oil drain plug
What size line wrench for a 2005 freestar