Dee, I'm not coming at you, I'm trying to understand what your suggestion is getting at. Your suggestion of checking the oil for coolant didn't make sense to me as to how that would cause the car to keep sputtering after it was shut off. I asked you to clarify, because on a daily basis I learn new stuff. I learn because I'm willing to say to myself "I don't know everything". In taking this attitude I've learned a lot that didn't appear to make any sense to me at all, so I asked you how that tied into the sputtering. My diagnostic approach is to suggest things that are relevant to the issue at hand to get the car fixed quickly.