Love Lucas stuff, and marvel oil... I swear i had a car with ZERO oil pressure, replaced a quart of the oil for marvel oil, and 60 miles later the oil pressure was near red lining!
I used lucas in my gas tank on a 2002 chevy express 5.7 liter engine that had a rod knocking according to my mechanic , he said I needed a rebuilt engine, that was last month. The engine stopped knocking right after lucas was added to my gas tank.