It’s maintenance, this is why there are different stocks of oils, base stock oil is conventional mixed with additives, highest stock oils are completely man made, Full Synthetics is base conventional oil mixed with additives that clean where as Amsoil is 100% synthetic base with 100% synthetic cleaning additives. 100% synthetic Amsoil lasts longer which means you can run it minimum twice as long as the crisco formula Mobil1 and protects more than 4X’s the amount of Mobil1’s best annual protection oil. Anyone can get cancer and I’ve personally list someone close to it, you can eat healthy all you want but if you’re predisposed to that cancer gene running in your family then it’s somewhat inevitable BUT you’re then forcing yourself to eat wheat grass and kale along with other high quality flush to help assist your body to get rid of your life threatening disease. Engines are no different, metal to metal requires the highest friction protection available thus protecting your engine from excessive wear and tear that WILL cause your engine to break down sooner rather than later. It’s obviously completely up to you, but here’s an official video available for anyone to view and gather additional information as to how the world of engine oil works, from how engine oil is really tested and marketed and at the end of the day, it’s completely up to you, pat yourself on the back all you want but cheap oil is cheap oil with cheap results and with all those very expensive moving parts, I’d want the highest protection available prolonging my engines life span. Protecting your engine in between oil changes is the most important! Pay attention to how oil performance is graded and the actual % amount additives that make up the oil. You’ll see, Mobil1 products are on the bottom of the barrel and all you’re paying for is MARKETING! Sent from Above