Synthetic worth it for these trucks?

[joshcarl]

the wife drives way too many miles for the cost of synthetic here. i use a quality petroleum-based oil at 5k intervals in everything she drives. now my car... that's another story.

 

[ezdaar]

http://www.tahoeyukonforum.com/forum/showthread.php?t=68120

Everything you need is in that post.
Link at bottom has full list at amazon.

 

[ccapehartusarmyINF.(ret)]

U can beat the power of the purple