How long should a Full Synthetic Oil Change last me?? sombody told me 6000 and another said 3000 so im a little confused on that

Also

Do I need to keep putting in Full Synthetic oil changes or can I go back to non-synthetic?

 

i would go with the mobil 1 for a while. i would go any more than 4k. i drive almost 160 miles aday so i cant always get to change the oil at 3k but i wouldnt ever go more than i 1k with out an oil change. and since all that is highway milage i should be able to go more but to be safe.

 

Go by the book, 5k should be fine.

Why on earth would you want to do that??

 

check your oil and change it when it doesnt look right anymore. typically mobil 1 has been good at 3k miles but ive been replacing it just cause thats what im used to do doing in previous cars.