Originally Posted by SubieRubyRoo
Originally Posted by k1xv
There is an implication that if you do not use a licensed oil in your newish GM vehicle, you risk denial of warranty.
I'm not a retired lawyer, but I found this on their website. It looks pretty explicit to me:
Originally Posted by "Center for QA's crappy website"
Unlicensed products have not gone through GM's rigorous testing process, are not monitored for quality, and are not approved or recommended for use in GM vehicles. Unlicensed product quality and suitability for GM vehicles cannot be guaranteed and, therefore, use of unlicensed products may result in lower levels of performance and could cause engine damage that may not be covered under warranty.
(emphasis mine)
From from explicit. That wording is full of loopholes "may", "therefore", "may result", and "could".