I haven't seen any voa or uoa posted on here PPHM so I was thinking about doing it. It would be for 5w20, the question is should I do the uoa for my 2010 jeep commander 3.7 with 180,000 miles on it or my 2008 mazda 5 2.3 with 115,00 miles on it? I would probably do both the voa and uoa.