i just went to the Walmart website and SuperTech full synthetic is still at around $18 for 5 quarts. Their more "Advanced" formula is just $1 more! From doing my own oil testing
and validating it with the used oil analysis on here in terms of wear SuperTech and Mobil 1 are the same. There could be a difference with longer OCIs and detergency, but if the SuperTech is changed out before 5000 miles you wont have that problem. No matter what anyone tells me on here Im going to change my oil before 5000 miles in any event whether it be Amsoil or Mobil 1 or Supertech. I will not be taking mine to 20,000 miles.
I was a big user of Supertech and Kirkland, but switched to 5W40 and Warren does not really make a 5W40 API SP thus I looked for 5W40s on sale. Quaker State has a 5W40 API SP for $23. I was able to stock up on Castrol, Mobil 1 and Valvoline 5W40 when they were at or below $24 for 5 quarts. I have quite a bit and the prices on all of those have risen lately...
The used oil analysis I got for SuperTech Advanced showed only a minor decrease in wear and not really a significant difference. If its only a dollar more in price sure I would get that. They even have a high mileage advanced formula.
BTW, Kirkland is the same as SuperTech and when its on sale its $30 for 2 5 quart jugs. Like I said I dont think there is a great difference between Mobil 1 and Warrens 5W30. As for 0W20 I wouldnt put that in anything but thats a whole other topic.