Can synthetic go 4K between change?

[meowguy_imp]

My opinion on oil and $2.00 will get you coffee at Dunkin Donuts. I just think oil is the cheapest insurance you can buy for your motor and tranny. The oil change interval on my Toyota Tundra with synthetic is stated as 10k miles. I change it every 5k, just as I would do with dino. That is because I don't drive it that much to begin with, maybe 6k per year.

Whenever my father used to disagree with some choice I had made, after a lengthy discussion, he would always say; "do what you think is best son". Sent chills down my spine...really.