Heck conventioal 15-40 Rotella is cheaper than WalMart crap oil!!!! I was hunting some today and Wally was OUT of that Rotella, and I found some at Tractor Supply same price as friggin Wally!!!
I can get the Rotella 5 gal bucket for $82 (Wally and O'Reilly match) or I can get 6 1-gallon containers at Costco for $80. Plus the gallon containers are gonna be easier to handle. It's the filters that are gonna cost a bunch...