Bob, my condolences to you and your family. What a tragic story. I want you to know I was changing oil in a vehicle just a few days ago and thought of this thread. It caused me to double check my stands and grab an extra wheel chock. Your words have not fallen on deaf ears.
No one should outlive thier children , never mind grandchildren. Heartbreaking tragedy. I'm sorry for your families loss. Heed the warnings given here, and be safe, for you, for your family and your friends. Jim