Originally Posted by SilverStangRider View Post
For those of you that may be interested ,that after sending a PM to Deysha and asking her when the change over from QS to QDC occurred for the MY2012. I was informed that this happened 8-15-2011. And the XL-18 additive was added on those cars built 7-9-2012 and on.
now i just need to look at my date and hope it is after that....