Not trying to beat a dead horse but haven't seen this discussion in one thread. Pennzoil Conventional is $16.47 at my local Walmart for a five qt jug and five quarts of NAPA syn can be had for $1.50 more on sale thru 4/30. For these prices, which would you use in a Honda or Acura vehicle (5w-20 flavor)? I think either would be great but just wanted to know if I am missing something obvious. Thanks.