I was doing a little comparision shopping in WalMart today and noticed their private brand oil and anti freeze. The Super Tech oil comes in dino and synthetic and meets all the necessary classifications. The Suoer Tech extended anti freeze also states it is compatible with ALL antifreezes. [Dex Cool by implication] Haviline and Prestone extended anti freeze do make a big deal out of saying on the front label that they are compatible with Dex Cool but my gut tells me there is no difference. Aside from the price which is substantially lower. Any thoughts?