Walmart is advertising Mobil Full Synthetic 0W-20 and 5W-20 for C$26.97 (plus eco fee plus 12% sales tax).
That's cheaper than SuperTech (not shown in the flyer, but seen recently for C$28.88 plus eco fee plus sales tax).
Is Walmart moving away from ST to a lower grade of Mobil synthetic as its house oil?
What's the difference between Mobil Full Synthetic and Mobil 1?