Daniel, thanks for taking time out to respond to my post.
gpm (grams per mile) was exactly what was printed on the diagnostic
report.
my car doesn't leak/burn that much oil, maybe a quart every 1,000
miles, I thought that was somewhat normal for a 20 year old car.
I used GTO because it was recommended to burn off carbon deposits and
clean my fuel system, the Heet was also used to clean the fuel tank of
moisture and reduce emissions (or so I hoped) and the cat cost $300
which I hoped would reduce emissions.