Being 16 I presume you do not remember the fram filter ads that used to run on tv. They said pay me now or pay me later. Stop trying to impress anyone. Oil is cheap compared to tearing down an engine. Change your oil and filter every 4,000 miles and three times a year. Same with Air filter and fuel filter, keep them clean. You'll really impress your parents if you buy a Haynes or Chilton Manual and learn to do simple stuff yourself.