Hi, Scotty, I love your channal alot, i used to have a VW cc which is 2.0T, I use full syn oil and it lasts 10000 miles or a year which stated by the OEM. Recently i changed the car to a nissan quest, it uses the same full syn oil but the manualfactory recommanded only 5000 miles and 6month, now the questions is is it ok if i change oil for the nissan at 10000 miles or a year?

NO , nissans have weak engines. I would change the oil every 5 thousand miles or once a year on that

Weaker engines? Sounds like I made mistake buying a Nissan