Maybe your store did this; not mine. My Rural Kings both have pallets of this oil on floor in oil isle. Even store I visited in Ohio this weekend had tons of it.
I went and found the thread talking about it being on clearance, I guess what they clearanced was Delvac MX F3, Mobil likes to sell too many similar products with slightly different names, MX F2 and MX F3 are both high SAPS CI-4+ HDEO for pre-emissions diesels.
