Trying this in the Aurora with the 3.5L "Shortstar" known for oil consumption from coked oil rings. Last OCI added 1 pint with 6qts Rotella 10w30 with the 2nd pint added at the first top up. 2000 miles on OCI and consumption is improved from 1qt/300 miles to 1qt/500 miles. Going to run one more pint and change to fresh T5 10w30 with another pint of Kreen to see if it has any more effect. Pretty expensive for a car with 150,000 miles but at under 500 miles per quart of oil and approx 600 miles per week driving that adds up quick, too.