I was killing some time on the Sam's Club website and found a brand of 10w30 called "Certified" that they are selling for around $20 a case. Certified also makes a DexMerc for around the same price. After checking the MSDS I found both the oil and atf are made by Sepecialty Oil Company out of Houston Texas. Does anyone have an opinion on this brand? (I did try to search but didn't find anything in the oil sections for this brand).