16oz (available in 12-packs) gives you the perfect measurement to treat two oil changes with a single bottle. Slick oil is reduced on your pistons, allowing their rings to properly seat. Startup performance increases with less chatter, and a noticeable change in power (usually apparent after the second time you start the car up, once it’s had some time to run its course).
This additive contains high levels of zinc and phosphorus, making it extremely important to only use what’s recommended for your vehicle. Too much zinc can slowly degrade the smaller working parts of your motor, as we explain a bit later. Red Line decreased metal-to-metal contact, boosting your performance.