[Biggd]

Originally Posted by Skippermark

I didn’t know about it either, but my son is an auto tech and told me about it, and sure enough when I looked up Mobile 1, Valvoline, and a few other brands, they all had that Dexos logo on them.

I imagine there are some of their oils that aren’t certified, but they’re probably for older cars.

I guess it’s kind of like from the “old” days when I was younger and oil had ratings of SF, SG and the like.

Mobile 1 is a great oil. They really started the push to synthetic, and even today other brands just don’t have the popularity of it.

GM does label their synthetic oil, Dexos. You can buy the Dexos brand oil but it's more expensive than Mobil 1.