[dzitlow]

What is the size in mm for a wrench or socket to use on removing and reinstalling drain plug for engine change?

 

[dzitlow]

drain plus size for engine oil

I am anticipating my own oil and filter change. I tried a l6mm socket and it didn't seem to slip. Well, we got a "range" of l4mm. to l7mm.
Maybe somebody can give a definitive size. I just don't want to strip the bolt. Thanks again!