Why are you asking this here? Don't you think you would be better served to head to your local auto parts store and let them tell you? They do know that stuff you know...........duh
To be honest, the mere utterance of the words suicide or marriage breakup between you and your wife over the relationship with your son and DIL signals you both probably have some mental issues. Sounds to me like there is more to this story than just a little family argument back in December of...