First, Dexos is not a brand or type of oil as many will have you believe. It is a specification. You can't "buy a case of Dexos". The OEM brand is AC Delco, which if I'm not mistaken, gets their oil from Mobil.
Second, there is a difference between "Dexos certified" and "meets and exceeds Dexos specs". The first means the company pays fees to GM to be able to display the Dexos logo on their bottles, and the latter doesn't have the logo, but has conducted tests to make sure it meets the Dexos spec. "Meets and exceeds Dexos specs" is 100% good to go as far as warranty goes per the owner's manual.
Does Dexos certified mean it's automatically better? Hardly. Most name brand oils on the market already met the Dexos specs before it ever existed, just now GM gets to make money off of it. It's really nothing more than a tax. Amsoil, for example, doesn't have the logo, but states on the back of their bottles "meets and exceeds Dexos specs". Amsoil is some of the best stuff out there.
2016 Canyon All-Terrain 4x4 3.6L v6 ECLB
Amsoil fluids bumper to bumper
Speedliner spray-on bedliner
Weathertech floor mats
AVS hood deflector and window visors
A.R.E MX bed cap w/ Yakima roof rack
Last edited by Randall Conway; 03-21-2017 at 04:29 PM.