Brad Penn on Amazon.com confusion
 

Amazon has 2 links to Brad Penn 20/50 oil, one called "Brad Penn 20/50 Racing Oil" the other is listed as, "Brad Penn Grade 1 20/50 Partially Synthetic Oil". These are the same thing right? They aren't priced the same either...the one listed as "partially synthetic" is $0.50 cheaper. My question is, Brad Penn only makes one 20/50 motor oil right?

Penn Grade 1 High Performance Oil

amazon probably has two different venders selling it with two different descriptions with two diffeerent prices for the same stuff

It looks like Amazon is selling the higher priced one ($4.99) and a vendor is selling the lower($4.59). You'll come out ahead by buying Amazon's because you won't pay for tax or shipping if you have a prime account.