Brazilian Dodge Dart 76 (similar to 69 usa)
Brake fluid?
Alex you may have issues re-painting if that brake fluid seeps into that old dry plastic. You may want to clean up again with rubbing alcohol and set that grill out in the sun so it can bake the oil residue off.
I would hate to see you have to clean all 108 squares again...
Keep up the good work.
Mop