I have a 2002 Grand Prix 3.8L non-supercharged. I am trying to flush the radiator. I found the drain plug but it looks different than the replacement plugs seen on the internet. Does this plug require a special tool?
Looking through older posts, it appears that I should just flush through the lower hose and not to bother with the drain plug. Spent over an hour trying to open the plug so just very curious.
Thanks!