Is this the basic of the basics? Not at all! Periodic Maintenance is the most crucial of all for an engine. It saves you huge repair cost and reduce unnecessary down time, not to mention maintaining good driveability at all time. Most clients will be only familiar with the term General Service or Oil Change. Is it enough? Definitely not! In General Service, only a few consumable parts will be changed, e.g. Engine Oil, Engine Oil Filter, Spark Plugs, Air Filter, etc. Don’t get us wrong, timely renewal of all these parts are most important as they had already trapped enough dirt or had lost the property to perform it’s duty (mostly friction elimination). But there are still lots of contaminants, e.g. Oil Sludge, Carbon, dirt, etc, still left within the engine. At Harmony Motor, we strongly recommend that all engine should perform yearly De-Carbon for the 3 tracks: Air Track, Fuel Track and Lub Track.