Originally Posted by Scooped
Synthetic always (welcome to the world of $100+ oil changes) -every 6,000 miles or 10,000K's. Your truck will tell you as well if it slips your mind.
What 100 for an oil change for synthetic are you nuts,oh wait thats right i get my oil fro free lol
But ya its alot but well worth it.
As far as changing it you should have an oil light on the truck that will come on to tell you when to do it but if you dont trust that then like he other guy said i did mine at 1k then 5k now i do it at 8k.
If you pick your own time frame just reset the light when it comes on.
And also if you do alot of city driving start and stop then do it sooner