Toyota Certification MEANS NOTHING. ASE certification means you worked in the "trade" for two years+, or went to school 2+ and worked in the trade 1 year+, AND were able to pass a test (or a few tests).

"Toyota Certification" means you sat in a couple seminars. If in doubt, change it. Good oil is cheap insurance.

Always look over and check your truck after an oil change (or better yet, do it yourself). Most quick lubes, even dealership ones, DO NOT USE MECHANICS TO CHANGE OIL. They hire cheap labor and train them. Low pay means little attention to detail. Loose drain plugs, forgotten oil fillup, missing cap, you name it. They all happen in a quick lube.