Oil pan plug size on 2006 Buick Lucerne

I am trying to determine the exact size of wrench that will fit the oil pan plug on my car. One 14mm socket fits it, but a 14mm open/closed end straight wrench is too large. What is correct?

by in Wichita Falls, TX on February 22, 2009
Get Your Car Fixed at a RepairPal Certified Shop.
We certify shops based on expertise, quality work, and verified customer reviews
2 answers 1 comment
ANSWER by , February 26, 2009
Some show 13mm and some show 14mm use the boxed end as long as its snug it will be fine.
ANSWER by , May 20, 2012
Using a wrench a 13mm will fit it.
COMMENT by , June 21, 2012
13mm seems to fit pretty snugly. No room for a drive though, just use a box wrench.