RE: Break-in process for OS .18CVRX
You'll have a cool-down period while you fill the tank and then restart the engine. Don't refill with the engine running. Also, remember to DRIVE the car. Your engine won't break in much at all if you just let it sit. We accelerate up and down our parking lot to run the engine and get it up to RPM. We gradually work the high-speed needle leaner as we drive the car.