Originally Posted by cobrajet429
I changed the factory fill at 1800. Just checked it at 3699 and was at the bottom of the dipstick. I know 1000 per qt is acceptable. But I will be very disappointed with My first American car after 15yrs over this. By the way the 73 SD455 Pontiac was 700 miles per qt acceptable.
I just changed the oil this weekend (9700 miles).
I would extrapolate the oil consumption to be 1 quart per 8000~10000 miles.