Depending on the make, year and model of your car will determine weather or not if and when you will need a sunup. Most late model cars have modern electronic ignitions, platinum spark plugs, and fuel injectors. They dynamically “tune” themselves, and less of moving parts, better materials will allow you to only replace your spark plugs and wires every 50 – 60,000 miles. Older cars, from the 60’s, 70s and early 80s, often had semi-mechanical ignitions and fuel metering systems (carborators), with a rotating distributor that uses mechanical ignition points, all of which needed to be cleaned and frequently adjusted and/or replacement, every 10,000 to 15,000 miles. Read your owner’s manual service recommendations or contact one of our representatives to learn more.